Same here. I just installed the latest x2go client stable release version 4.0.3.0 and the window border disappears along with the minimize, maximize and close buttons when pressing the maximize button. Moving the window has no strage effect, though.

Client: Windows 7 32-bit SP1 Package: x2goclient Version: 4.0.3.0

Host: Linux Mint 17 64 bit x2goserver: 4.0.1.18-0~949~ubuntu14.04.1 x2goagent: 2:3.5.0.28-0~481~ubuntu14.04.1 nxagent: 2:3.5.0.28-0~481~ubuntu14.04.1

Here are the requested output before and after maximizing the window and losing the window controls:

** Before

$ xrandr --verbose xrandr: Failed to get size of gamma for output default Screen 0: minimum 320 x 240, current 1024 x 768, maximum 1920 x 1200 default connected 1024x768+0+0 (0x147f2) normal (normal) 0mm x 0mm Identifier: 0x147ea Timestamp: -331740951 Subpixel: unknown Clones:
CRTC: 0 CRTCs: 0 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: 1280x800 (0x147eb) 61.4MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 48.0KHz v: height 800 start 0 end 0 total 800 clock 60.0Hz 320x240 (0x147ec) 4.6MHz h: width 320 start 0 end 0 total 320 skew 0 clock 14.4KHz v: height 240 start 0 end 0 total 240 clock 60.0Hz 640x360 (0x147ed) 13.8MHz h: width 640 start 0 end 0 total 640 skew 0 clock 21.6KHz v: height 360 start 0 end 0 total 360 clock 60.0Hz 640x480 (0x147ee) 18.4MHz h: width 640 start 0 end 0 total 640 skew 0 clock 28.8KHz v: height 480 start 0 end 0 total 480 clock 60.0Hz 800x480 (0x147ef) 23.0MHz h: width 800 start 0 end 0 total 800 skew 0 clock 28.8KHz v: height 480 start 0 end 0 total 480 clock 60.0Hz 800x600 (0x147f0) 28.8MHz h: width 800 start 0 end 0 total 800 skew 0 clock 36.0KHz v: height 600 start 0 end 0 total 600 clock 60.0Hz 1024x600 (0x147f1) 36.9MHz h: width 1024 start 0 end 0 total 1024 skew 0 clock 36.0KHz v: height 600 start 0 end 0 total 600 clock 60.0Hz 1024x768 (0x147f2) 47.2MHz *current h: width 1024 start 0 end 0 total 1024 skew 0 clock 46.1KHz v: height 768 start 0 end 0 total 768 clock 60.0Hz 1152x864 (0x147f3) 59.7MHz h: width 1152 start 0 end 0 total 1152 skew 0 clock 51.8KHz v: height 864 start 0 end 0 total 864 clock 60.0Hz 1280x720 (0x147f4) 55.3MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 43.2KHz v: height 720 start 0 end 0 total 720 clock 60.0Hz 1280x1024 (0x147f5) 78.6MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 61.4KHz v: height 1024 start 0 end 0 total 1024 clock 60.0Hz 1360x768 (0x147f6) 62.7MHz h: width 1360 start 0 end 0 total 1360 skew 0 clock 46.1KHz v: height 768 start 0 end 0 total 768 clock 60.0Hz 1440x900 (0x147f7) 77.8MHz h: width 1440 start 0 end 0 total 1440 skew 0 clock 54.0KHz v: height 900 start 0 end 0 total 900 clock 60.0Hz 1600x900 (0x147f8) 86.4MHz h: width 1600 start 0 end 0 total 1600 skew 0 clock 54.0KHz v: height 900 start 0 end 0 total 900 clock 60.0Hz 1600x1200 (0x147f9) 115.2MHz h: width 1600 start 0 end 0 total 1600 skew 0 clock 72.0KHz v: height 1200 start 0 end 0 total 1200 clock 60.0Hz 1680x1050 (0x147fa) 105.8MHz h: width 1680 start 0 end 0 total 1680 skew 0 clock 63.0KHz v: height 1050 start 0 end 0 total 1050 clock 60.0Hz 1920x1080 (0x147fb) 124.4MHz h: width 1920 start 0 end 0 total 1920 skew 0 clock 64.8KHz v: height 1080 start 0 end 0 total 1080 clock 60.0Hz 1920x1200 (0x147fc) 138.2MHz h: width 1920 start 0 end 0 total 1920 skew 0 clock 72.0KHz v: height 1200 start 0 end 0 total 1200 clock 60.0Hz

$ xdpyinfo -ext XINERAMA name of display: :50 version number: 11.0 vendor string: The X.Org Foundation vendor release number: 70000000 X.Org version: 7.0.0 maximum request size: 16777212 bytes motion buffer size: 256 bitmap unit, bit order, padding: 32, LSBFirst, 32 image byte order: LSBFirst number of supported pixmap formats: 7 supported pixmap formats: depth 1, bits_per_pixel 1, scanline_pad 32 depth 4, bits_per_pixel 8, scanline_pad 32 depth 8, bits_per_pixel 8, scanline_pad 32 depth 15, bits_per_pixel 16, scanline_pad 32 depth 16, bits_per_pixel 16, scanline_pad 32 depth 24, bits_per_pixel 32, scanline_pad 32 depth 32, bits_per_pixel 32, scanline_pad 32 keycode range: minimum 8, maximum 255 focus: window 0x5e0001b, revert to PointerRoot number of extensions: 26 BIG-REQUESTS DAMAGE DEC-XTRAP DOUBLE-BUFFER DPMS Extended-Visual-Information GLX MIT-SHM MIT-SUNDRY-NONSTANDARD RANDR RECORD RENDER SECURITY SGI-GLX SHAPE SYNC TOG-CUP X-Resource XC-APPGROUP XC-MISC XFree86-Bigfont XINERAMA XInputExtension XKEYBOARD XTEST XVideo default screen number: 0 number of screens: 1

screen #0:
  dimensions:    1024x768 pixels (271x203 millimeters)
  resolution:    96x96 dots per inch
  depths (7):    24, 1, 4, 8, 15, 16, 32
  root window id:    0x6e
  depth of root window:    24 planes
  number of colormaps:    minimum 1, maximum 1
  default colormap:    0x54
  default number of colormap cells:    256
  preallocated pixels:    black 0, white 16777215
  options:    backing-store YES, save-unders YES
  largest cursor:    1024x768
  current input event mask:    0xfac033
    KeyPressMask             KeyReleaseMask           EnterWindowMask         
    LeaveWindowMask          KeymapStateMask          ExposureMask            
    StructureNotifyMask      SubstructureNotifyMask   SubstructureRedirectMask
    FocusChangeMask          PropertyChangeMask       ColormapChangeMask      
  number of visuals:    5
  default visual id:  0x4f
  visual:
    visual id:    0x4f
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x50
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x51
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x52
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x53
    class:    StaticColor
    depth:    24 planes
    available colormap entries:    256
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits

XINERAMA version 1.1 opcode: 150
  Xinerama is inactive.

** After maximizing the window

$ xrandr --verbose
xrandr: Failed to get size of gamma for output default Screen 0: minimum 320 x 240, current 1920 x 1080, maximum 1920 x 1200 default connected 1920x1080+0+0 (0x147fb) normal (normal) 0mm x 0mm Identifier: 0x147ea Timestamp: -329630780 Subpixel: unknown Clones:
CRTC: 0 CRTCs: 0 Transform: 1.000000 0.000000 0.000000 0.000000 1.000000 0.000000 0.000000 0.000000 1.000000 filter: 1280x800 (0x147eb) 61.4MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 48.0KHz v: height 800 start 0 end 0 total 800 clock 60.0Hz 320x240 (0x147ec) 4.6MHz h: width 320 start 0 end 0 total 320 skew 0 clock 14.4KHz v: height 240 start 0 end 0 total 240 clock 60.0Hz 640x360 (0x147ed) 13.8MHz h: width 640 start 0 end 0 total 640 skew 0 clock 21.6KHz v: height 360 start 0 end 0 total 360 clock 60.0Hz 640x480 (0x147ee) 18.4MHz h: width 640 start 0 end 0 total 640 skew 0 clock 28.8KHz v: height 480 start 0 end 0 total 480 clock 60.0Hz 800x480 (0x147ef) 23.0MHz h: width 800 start 0 end 0 total 800 skew 0 clock 28.8KHz v: height 480 start 0 end 0 total 480 clock 60.0Hz 800x600 (0x147f0) 28.8MHz h: width 800 start 0 end 0 total 800 skew 0 clock 36.0KHz v: height 600 start 0 end 0 total 600 clock 60.0Hz 1024x600 (0x147f1) 36.9MHz h: width 1024 start 0 end 0 total 1024 skew 0 clock 36.0KHz v: height 600 start 0 end 0 total 600 clock 60.0Hz 1024x768 (0x147f2) 47.2MHz h: width 1024 start 0 end 0 total 1024 skew 0 clock 46.1KHz v: height 768 start 0 end 0 total 768 clock 60.0Hz 1152x864 (0x147f3) 59.7MHz h: width 1152 start 0 end 0 total 1152 skew 0 clock 51.8KHz v: height 864 start 0 end 0 total 864 clock 60.0Hz 1280x720 (0x147f4) 55.3MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 43.2KHz v: height 720 start 0 end 0 total 720 clock 60.0Hz 1280x1024 (0x147f5) 78.6MHz h: width 1280 start 0 end 0 total 1280 skew 0 clock 61.4KHz v: height 1024 start 0 end 0 total 1024 clock 60.0Hz 1360x768 (0x147f6) 62.7MHz h: width 1360 start 0 end 0 total 1360 skew 0 clock 46.1KHz v: height 768 start 0 end 0 total 768 clock 60.0Hz 1440x900 (0x147f7) 77.8MHz h: width 1440 start 0 end 0 total 1440 skew 0 clock 54.0KHz v: height 900 start 0 end 0 total 900 clock 60.0Hz 1600x900 (0x147f8) 86.4MHz h: width 1600 start 0 end 0 total 1600 skew 0 clock 54.0KHz v: height 900 start 0 end 0 total 900 clock 60.0Hz 1600x1200 (0x147f9) 115.2MHz h: width 1600 start 0 end 0 total 1600 skew 0 clock 72.0KHz v: height 1200 start 0 end 0 total 1200 clock 60.0Hz 1680x1050 (0x147fa) 105.8MHz h: width 1680 start 0 end 0 total 1680 skew 0 clock 63.0KHz v: height 1050 start 0 end 0 total 1050 clock 60.0Hz 1920x1080 (0x147fb) 124.4MHz *current h: width 1920 start 0 end 0 total 1920 skew 0 clock 64.8KHz v: height 1080 start 0 end 0 total 1080 clock 60.0Hz 1920x1200 (0x147fc) 138.2MHz h: width 1920 start 0 end 0 total 1920 skew 0 clock 72.0KHz v: height 1200 start 0 end 0 total 1200 clock 60.0Hz

$ xdpyinfo -ext XINERAMA name of display: :50 version number: 11.0 vendor string: The X.Org Foundation vendor release number: 70000000 X.Org version: 7.0.0 maximum request size: 16777212 bytes motion buffer size: 256 bitmap unit, bit order, padding: 32, LSBFirst, 32 image byte order: LSBFirst number of supported pixmap formats: 7 supported pixmap formats: depth 1, bits_per_pixel 1, scanline_pad 32 depth 4, bits_per_pixel 8, scanline_pad 32 depth 8, bits_per_pixel 8, scanline_pad 32 depth 15, bits_per_pixel 16, scanline_pad 32 depth 16, bits_per_pixel 16, scanline_pad 32 depth 24, bits_per_pixel 32, scanline_pad 32 depth 32, bits_per_pixel 32, scanline_pad 32 keycode range: minimum 8, maximum 255 focus: window 0x5e0001b, revert to PointerRoot number of extensions: 26 BIG-REQUESTS DAMAGE DEC-XTRAP DOUBLE-BUFFER DPMS Extended-Visual-Information GLX MIT-SHM MIT-SUNDRY-NONSTANDARD RANDR RECORD RENDER SECURITY SGI-GLX SHAPE SYNC TOG-CUP X-Resource XC-APPGROUP XC-MISC XFree86-Bigfont XINERAMA XInputExtension XKEYBOARD XTEST XVideo default screen number: 0 number of screens: 1

screen #0:
  dimensions:    1920x1080 pixels (508x286 millimeters)
  resolution:    96x96 dots per inch
  depths (7):    24, 1, 4, 8, 15, 16, 32
  root window id:    0x6e
  depth of root window:    24 planes
  number of colormaps:    minimum 1, maximum 1
  default colormap:    0x54
  default number of colormap cells:    256
  preallocated pixels:    black 0, white 16777215
  options:    backing-store YES, save-unders YES
  largest cursor:    1920x1080
  current input event mask:    0xfac033
    KeyPressMask             KeyReleaseMask           EnterWindowMask         
    LeaveWindowMask          KeymapStateMask          ExposureMask            
    StructureNotifyMask      SubstructureNotifyMask   SubstructureRedirectMask
    FocusChangeMask          PropertyChangeMask       ColormapChangeMask      
  number of visuals:    5
  default visual id:  0x4f
  visual:
    visual id:    0x4f
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x50
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x51
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x52
    class:    TrueColor
    depth:    24 planes
    available colormap entries:    256 per subfield
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits
  visual:
    visual id:    0x53
    class:    StaticColor
    depth:    24 planes
    available colormap entries:    256
    red, green, blue masks:    0xff0000, 0xff00, 0xff
    significant bits in color specification:    8 bits

XINERAMA version 1.1 opcode: 150
  Xinerama is inactive.

Hope that helps fix the issue. It's very annoying :S Thanks for your support!