Just like your other issue I can not replicate it at all

Just like your other issue I can not replicate it at all

Strange, I can't explain. The following screenshot shows the same after hovering. See: https://cassiopeia.joomla.com/blog

see https://gsd.brianstest.site/

see https://gsd.brianstest.site/

Both the Footer module and the Back-to-top Link show a correct display after hovering.

Windows 11, Firefox, Edge and Chrome.

Found it and the reason why I couldnt replicate.

The problem is from your pull request #40435

As that hasnt been upmerged into 4.4 or 5 yet then I didnt have the faulty css

Possible solution:

Change:

.footer a {
  color: currentColor;
}

to

.footer a, .footer a:focus, .footer a:hover {
  color: currentColor;
}

I think, it belongs to this: (on a test-site) and also here:
https://cassiopeia.joomla.com/blog

a:not(.btn):focus, a:not(.btn):hover { color: var(--cassiopeia-color-hover); }

This will work (in a user.css):

.footer a, .footer a:focus, .footer a:hover { color: currentColor; }

I think, it belongs to this: (on a test-site) and also here:

Exactly

This will work (in a user.css):

Indeed , that code works

But see: #40435 (comment)

Closing as having a pull request. Please test #41461 . Thanks in advance.