[tor-bugs] #31015 [Applications/Tor Browser]: svg.disabled = 'true' hides the the UI icons in extensions

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#31015: svg.disabled = 'true' hides the the UI icons in extensions
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 Reporter:  cypherpunks  |          Owner:  tbb-team
     Type:  defect       |         Status:  new
 Priority:  Medium       |      Component:  Applications/Tor Browser
  Version:               |       Severity:  Major
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
 Reviewer:               |        Sponsor:
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 In "safest" security level `svg.disabled` is set to `true` in Tor Browser.
 This causes the UI icons in the latest versions of uBblock Origin and
 uMatrix to disappear.

 The author of the extensions declined working on this with a note:

 "I consider this a browser issue, to be reported to Firefox issue tracker.
 Extensions extend a browser abilities, they should not be subjected to
 restrictions which are meant to be imposed on web pages."

 https://github.com/uBlockOrigin/uBlock-issues/issues/446

 However as this is Tor Browser specific, I am reporting it here.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/31015>
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