[tbb-bugs] #26247 [Applications/Tor Browser]: On some chrome pages (about:addons) are tooltips just a black bar on Linux

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#26247: On some chrome pages (about:addons) are tooltips just a black bar on Linux
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     Reporter:  gk                        |      Owner:  tbb-team
         Type:  defect                    |     Status:  new
     Priority:  Medium                    |  Milestone:
    Component:  Applications/Tor Browser  |    Version:
     Severity:  Normal                    |   Keywords:  ff60-esr
Actual Points:                            |  Parent ID:
       Points:                            |   Reviewer:
      Sponsor:                            |
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 Testing the ESR 60 nightlies it turns out that tooltips on some chrome
 pages are not visible. Rather, just a black bar is shown. This can be
 reproduced on `about:addons` when hovering over "Extensions", "Themes", or
 "Plugins".

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26247>
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