Well the [] was just an example, Everytime i hit the Alt Gr button my buttons on the keyboard stop responding, like Shift and Ctrl stop working, i cannot Alt+Tab, practically every "special action" button stops responding, only fixable by a forced computer restart. All this happen while Octopus is running, closing the application doesn't fix anything.

I hope this explain's the issue a little bit better, I'm going to continue searching the web to see if i can find any solution.