Or the menu opens but instantly closes. I've had this issue off and on for a few weeks. I tried closing Tixati and opening it again but the problem persists.

what version of Tixati?
what OS?
the menu opens for me just fine on windows 7 and linux on version 3.29
do any other menus not display for you?

Version 3.29
Windows 10


I realized I cant right click anything in the "Files" tab either.

are you sure that your mouse works properly? any double clicking?
have you tried a different mouse?
any other programs having this trouble for you?