I have this same problem in Ubuntu. I figured out a way around it though. Use the keyboard and the tab keys. The spacebar will check and uncheck an option. Tab over to the "OK" button and press enter to exit and save. Same procedure works for adding buttons to the toolbar.
I have this same problem in Ubuntu. I figured out a way around it though. Use the keyboard and the tab keys. The spacebar will check and uncheck an option. Tab over to the "OK" button and press enter to exit and save. Same procedure works for adding buttons to the toolbar.