Based on :qdot's comment in bug 1151643 comment 5, this probably won't be fixed immediately, so we should probably back out the pref flip for now. Ni? :qdot to see if they think this will be straightforward for me to fix.
Bug 1542415 Comment 19 Edit History
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Based on :qdot's comment in bug 1551643 comment 5, this probably won't be fixed immediately, so we should probably back out the pref flip for now. Ni? :qdot to see if they think this will be straightforward for me to fix.