The Tor icon on the support page does not show up when security setting is set to safest.

The Tor icon on the support page does not show up when security setting is set to safest. Tested with TorBrowser 8a10 nightly https://s22.postimg.cc/m2zv2o4hd/Screen_Shot_2018-08-18_at_5.19.51_PM.png

Trac:
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