Currently it's working
Bug 1556655 Comment 5 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
Currently it's working. Fix window: https://hg.mozilla.org/integration/autoland/pushloghtml?fromchange=9b4358c2ea5fb38b7d8208be96efcdd1fc7e77dd&tochange=0fc603b37e654a5fb4205c8494c95d3102e604d9 Fixed by Bug 1557073.