Selecting all text using command + A
(on macOS) doesn't work.
Also, I can't use control + click
(right click) to open the context dropdown menu. Nothing happens.
The command + a part may be fixed in v1.9.6, I'm not fully sure. The context menu issue is odd, I'm not sure I'll be able to fix it (the context menu only offers copy and paste actions anyway, which should be available with the usual keyboard shortcuts)
The copy and paste commands (command + c / v) work.
Select all (command + a) is the only one that doesn't.
Anyway, I just wanted to let you know.
As I said, I use the browser GUI most of the time (which fully works).
EDIT:
Now "command + a" works! (in the 1.9.6 version of the O-S-C Launcher's GUI)
Hurray!
EDIT2:
Right click still doesn't work, but as you said, copying, pasting and selecting the text can be done with keyboard commands. That's enough.