Vertical lines are shown on webpages and in full-screen videos.

[DeeBeeDouble]

Vertical lines are shown on webpages and in full-screen videos.

[ThuHtooSan]

Same here. I thought it was because of some gnome extensions I installed but it doesn't appear in my native video player. So, this theme might be the culprit.

[rafaelmardojai]

Maybe related-to/same-as #744, but sadly I can't reproduce it.

I tried to replicate it into my VM (UTM) on silver blue with no success.
IS it possible it's an hardware acceleration issue rather than a theme bug (if so maybe try the native firefox instead of the flatpak in my memory acceleration issue is one known bug of the flatpak edition of firefox) ?

[iansantosdev]

This happens when there are downloads in the queue.

[DeeBeeDouble]

This happens when there are downloads in the queue.

Hmm for me it happens regardless even without downloads.

[DeeBeeDouble]

I tried to replicate it into my VM (UTM) on silver blue with no success. IS it possible it's an hardware acceleration issue rather than a theme bug (if so maybe try the native firefox instead of the flatpak in my memory acceleration issue is one known bug of the flatpak edition of firefox) ?

How is that possible? I tried it on completely different hardware with no settings changed. All i did was install LibreWolf, install the theme and that's it.

Native and the flatpak Firefox versions do not suffer from that problem, so I assume it is caused by one of the many flags LibreWolf changed.

[ThuHtooSan]

I can confirm that the line appears only when the downloads icon is visible and in the header bar. It doesn't appear when I put the downloads icon in the tab bar and bookmark toolbar.

[rafaelmardojai]

The downloads was enough to reproduce the bug, hopefully it should be fixed for the issue author too.

[DeeBeeDouble]

Sorry for the late response.
That did indeed fix the line in the top left corner; however, the other one remains.
In addition, I figured out that this one is in fact just the cursor (The one that appears when you type) that does not hide itself anymore.