Blur/transparency glitch in Zen browser

[MagneFire]

Info and logs

hyprland.log

systeminfo.log

Regression?

Yes, introduced in da86db4

Description

Blur/Transparency seems broken in zen browser. Depending on which display used (internal/external) a visual glitch is visible when the transparency mode is enabled, moving the window worsens this issue. From my testing only Zen browser is affected.
As can be seen in the videos kitty works fine.
I've also tested this on GNOME and Sway, both do not have this issue.

On the internal display it appears as if the blur is repeatedly applied:

hyprland-zen-blur-issue-eDP.mp4

While on an external display (using integrated GPU) everything turns red:

hyprland-zen-blur-issue-DP.mp4

How to reproduce

To verify issue the default (generated) Hyprland config file is used. Similarly for Zen browser, a new profile is selected.

• Ensure Zen browser 1.11.2b is installed
• Open Zen browser and navigate to about:config, accept the warning
• Search for zen.widget.linux.transparency, set it to true
• Observe visual glitches to the transparent side panel

[MagneFire]

Welp, it looks like this has already been fixed...

Probably one of these commits: 382f0f2...2da4f42

Thanks to all!