User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:95.0) Gecko/20100101 Firefox/95.0

Steps to reproduce:

Switching to tabs that were loaded in the background.

Actual results:

The webpage becomes black/dark. They only come into view if I scroll using mouse wheel/scrollbar.
It doesn't happen always, but it's happening quite often for me. I first noticed this in Firefox 90, and it's still the same in 95.

Expected results:

The webpage should show up like normal.

Installed extensions: Bitwarden - Free Password Manager, Dark Background and Light Text, Enhancer for YouTube™, Facebook Container, uBlock Origin.
I tried by disabling extensions with no success of fixing it.

Processor: AMD Ryzen 5 3400G with Radeon Vega Graphics

Sometimes it's partially black instead of full.

The Bugbug bot thinks this bug should belong to the 'Firefox::Tabbed Browser' component, and is moving the bug to that component. Please revert this change in case you think the bot is wrong.

Hi,

Could you please check if this issue also occurs on a new profile? Here is a link that can help you with that:
https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles

Thanks!

(In reply to Peter_M from comment #4)

Hi,

Could you please check if this issue also occurs on a new profile? Here is a link that can help you with that:
https://support.mozilla.org/en-US/kb/profile-manager-create-remove-switch-firefox-profiles

Thanks!

I forgot to add initially. But yeah, it also happens on a new profile. The second screenshot that I added is from a brand-new profile.

Flags that I changed are:
network.IDN_show_punycode true
browser.tabs.closeWindowWithLastTab false
toolkit.legacyUserProfileCustomizations.stylesheets true

My previous profile only had this in userChrome:

"@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
.tabbrowser-tab:not([pinned])
{
max-width: 200px !important;
min-width: 10px !important;
}
.tabbrowser-tab:not([fadein])
{
max-width: 1px !important;
min-width: 1px !important;
max-width: 1px;
min-width: 1px;
}"

The new profile doesn't have any. I didn't create any chrome folder.

The severity field is not set for this bug.
:dao, could you have a look please?

For more information, please visit auto_nag documentation.

Sounds like this could be the same root issue as bug 1742241.

Let's mark as a dupe. All the information here is still very much useful to solve this (thank you for providing this)!