Steam + linux : no more mouse rotate L/R and up/down, no more wheel zoom

[ehanuise 1]

Hi.

Running the demo on Linux (ubuntu 20) with Steam.

It says v20210319-6179b39-dsw instead of v20210322 (tried unistall/delete/reinstall, same version comes).
It was working great for a while but since now more than a week the game cannot be played anymore.

The right mouse button instead of rotating L/R/up/down now the cursor hided and reappears in centre of window, and has no effect

The middle button scroll doesn't zoom anymore

left mouse button still moves the screen
There isn't any shortcut to move the camera up/down, so without the mouse it's not useable anymore.

NB please consider a linux native version for the final game.