I am using MATE on Scientific Linux 7.2 (derivative of Redhat).
Using Florence with my touchscreen to input to a terminal
window, every key gives a doubled character e.g
AAaaccdd
Also, I get strange effects on the mouse if I use the CTRL
or shift keys. As I far as I know, Florence is the only onscreen
keyboard that could work with my OS and window manager,
so it is my only choice to use my machine in tablet mode
under Linux....
So I'd really like it to work!
I have the doubled key problem as well. For me it's actually three chars for each touch.
Probably related problem: if florence is running with the "Touch screen" mode enabled and I use a real keyboard, the autorepeat does not work properly: holding a key (on the real keyboard), the character will appear only three times, then autorepeat stops.