The details view mocks have a tabbed component for splitting up all the add-on info into digestible chunks. There should be a custom element to support this UI that those features can use.

https://mozilla.invisionapp.com/share/XBGB8FSG49S#/screens/355487349

Backed out 2 changesets (bug 1547835, bug 1550526) for causing EventStateManager.cpp asertion failures

push that caused the backout: https://treeherder.mozilla.org/#/jobs?repo=autoland&resultStatus=testfailed%2Cbusted%2Cexception%2Cretry%2Cusercancel%2Crunnable&revision=0bc1bd7285c1e06298eabf873e627596d95e73c2

failures: https://treeherder.mozilla.org/#/jobs?repo=autoland&resultStatus=testfailed%2Cbusted%2Cexception&classifiedState=unclassified&fromchange=fbcf6cd744b163f7073d8a6a00d89412b4bba9dc&selectedJob=246187435&searchStr=windows%2C10%2Cx64%2Cdebug%2Cmochitests%2Ctest-windows10-64%2Fdebug-mochitest-browser-chrome-e10s-4%2Cm%28bc4%29

backout: https://hg.mozilla.org/integration/autoland/rev/d8a1c2fa4ea526b7185459ef414828efb8bf9841

https://hg.mozilla.org/mozilla-central/rev/6d47ff50d4ac

I was able to reproduce this issue on Firefox 68.0a1 (20190513082256) under Win 7 64-bit.

This issue is verified as fixed on Firefox 69.0a1 (20190524095337) and Firefox 68.0b4 (20190523115432) under Win 7 64-bit and Mac OS X 10.14.1.

Please see the attached video.