It seems to affect all applications. Cannot insert tab in text, cannot tab complete in terminal. Alt+tab, control+tab, and command+tab all still work and register with the xserver.
Has anyone seen this / solved this before?
Configuration:
OSX 10.10.5 Yosemite on a late-2008 aluminum macbook Client: X2Go Client v. 4.0.5.1 (Qt - 4.8.7)
Server: Ubuntu studio, not sure what versions at the moment