[tor-bugs] #25467 [Applications/Tor Browser]: failing to read userChrome.css

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#25467: failing to read userChrome.css
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 Reporter:  cypherpunks               |          Owner:  tbb-team
     Type:  defect                    |         Status:  needs_information
 Priority:  Medium                    |      Milestone:
Component:  Applications/Tor Browser  |        Version:
 Severity:  Normal                    |     Resolution:
 Keywords:                            |  Actual Points:
Parent ID:                            |         Points:
 Reviewer:                            |        Sponsor:
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Comment (by cypherpunks):

 A dark theme is in use on the desktop, and all of the bookmark separators
 in TBB have become invisible. I've tried:

 menupopup menuseparator {
     -moz-appearance: none !important;
     border-color: grey !important;
 }

 The above works immediately, both with and without the @namespace line, in
 Firefox ESR 52.6.0.

 Other scripts were also tried, but this one was the only one working in FF
 52 ESR.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/25467#comment:2>
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