1618594 - Firefox underfills or overfills the window depending on scaling factor of initial monitor

Status: RESOLVED DUPLICATE of bug 1612377

(Core :: Graphics, defect)

Description

[Michael Cooper [:mythmon]]

Attachment: underfilling.png

When moving Firefox between monitors of different scaling factors, the contents of the window will be mis-sized compared to the container of the window. This results in either Firefox filling up only a fraction of the window, or with most of Firefox being inaccessible due to being off screen or sometimes overflowing the window.

The way this shows up seems to depend on the scaling factor of the monitor that Firefox was opened on. Opening a new window has no effect; all windows have the problem in the same direction.

Interestingly, the scaling seems to be off by a factor of 2x, even though my monitor is only scaled at 1.25x.

• MOZ_ENABLE_WAYLAND=1
• Wayland
• Sway tiling window manager
• Two displays, one at 1.25x scaling and the other at 1x
• Intel graphics

Comment 1

[Michael Cooper [:mythmon]]

Attachment: overfilling_maximized.png

Comment 2

[Michael Cooper [:mythmon]]

Attachment: overfilling_small.png

In this screenshot, note that Firefox should be much smaller than it is. The blue outline is the window manager's decorations denoting the window size.

Comment 3

[Michael Cooper [:mythmon]]

Comment on attachment 9129536 [details]
overfilling_maximized.png

Note that the tab bar is cut off, and that the license text is cut down the middle.

Comment 4

[Jan Alexander Steffens [:heftig]]

Is this a duplicate of bug 1612377?

Comment 5

[Michael Cooper [:mythmon]]

Looks like, thanks!