
They actually fixed it - the black rectangle disappeared - but the initial correct behavior from point 1.


The window minimize, maximize, and close buttons are no longer susceptible to the new Proton window-modal darkening (see attached screenshot). Look at the top right corner of the Firefox window and see what is described in the "Actual results" section.click: Application menu > Help > Troubleshoot mode. Do basically anything that makes the new Proton window modal appear, e.g.Launch Firefox (at least version 90.0 stable).
