Olivier Michel

We are progressing... Did you check all the different environment variables documented here: https://doc.qt.io/qt-6/highdpi.html#environment-variable-reference?

Alternatively, you may want to try to change the font sizes in the styling sheet: https://github.com/cyberbotics/webots/blob/master/resources/stylesheet.linux.qss

Could we integrate this in https://github.com/cyberbotics/webots/blob/master/src/webots/launcher/webots-linux.sh? If we can detect that we are in a high DPI i3wm environment, the launcher script could set these environment variables automatically?

That would be great.

I just tested and #4827 didn't fix the warning about canberra-gtk-module...

Note that starting firefox from the console will display the same canberra-gtk-module warning as webots: https://askubuntu.com/questions/1405649/how-to-resolve-ubuntu-22-04-gtk-messages-seen-when-firefox-installed-as-snap-use

Unfortunately, as I said, it is not fixed.

I confirm that didn't help for me either.

Rotating the viewpoint is not based on the selection, but on the picked object. Regardless of the selection, the rotation should take place around the picked point (intersection between the...

I believe this is not a regression.