Menus black out by unhovering them in high contrast mode

[cockad]

Hello!

I'm using Windows 8.1 in high contrast mode. Firefox menus black out when I unhover the mouse cursor from them but stay in the same menu.
This means: I can't read the menu items because of that blackness.

What's the problem here?

https://i.imgur.com/oBdLp6p.png

In other browsers this doesn't occur.

[DanRaisch]

Have you tried starting Firefox in Mozilla Safe Mode? http://kb.mozillazine.org/Safe_mode
If no improvement using Safe Mode, do you have the same problem if you create a new profile and test it with no extensions or non-default themes installed?
http://kb.mozillazine.org/Profile_Manager
and
http://kb.mozillazine.org/Creating_a_ne ... on_Windows

[cockad]

In safe mode it produces the same error, but with dark blue background colour.

Look:

https://i.imgur.com/JxZRcr9.png

But this also occurs in Thunderbird as well, also in safe mode, but not in all the menus. LOL

[DanRaisch]

I see you're using an obsolete version of Firefox. Not seeing anything of that sort here under Win 10 with Firefox 65.0. Are you using a non-default Windows theme?

[cockad]

Because the update would mess up all my previous settings and addons won't work. Let alone most of them can't be substituted.

Creating a new profile -> resulted a silent update I was not happy with it at all.

[DanRaisch]

Are you using a non-default Windows theme?

[cockad]

Well, I don't think so. It was an original high contrast theme that I modified via registry to look like the old classic XP theme.

[DanRaisch]

You might try, temporarily, reverting to the default Windows theme to see if Firefox menus display properly in that environment.

[malliz]

Well, I don't think so. It was an original high contrast theme that I modified via registry to look like the old classic XP theme.

So Yes you are using a non default theme