Sideloaded ScummVM latest stable version 2.2.1d.
Trying games I soon experienced that every mouse click was treated as only left click. Googling this soon displayed many ways of telling me that right click wouldn't work because Android just understand every click as pushing a touchscreen. Documentation about this focus almost exclusively on touchscreens, not connecting a physical mouse, which I find somewhat unusual since that is the way the games were designed.
The GUI showed that the right mouse clicks were indeed understood correctly (but not when actually playing games).
Anyway, when instead using the nightly, everything is working
