Finally it's fully working with Masayuki-san's help without any hack. The issue was to grab the `RangeParent` in the original event. It's not there any more in `openChatContextMenu()`.
Bug 1556203 Comment 63 Edit History
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Finally it's fully working with Masayuki-san's help without any hack. The issue was to grab the `RangeParent` in the original event. It's not there any more in `openChatContextMenu()`. EDIT: Interdiff v9-v10 shows all the hackery that could be removed when doing it correctly.
Finally it's fully working with Masayuki-san's help without any hack. The issue was to grab the `RangeParent` in the original event. It's not there any more in `openChatContextMenu()`. EDIT: Interdiff v9-v10 shows all the hackery that could be removed when doing it correctly: https://bugzilla.mozilla.org/attachment.cgi?oldid=9072429&action=interdiff&newid=9072466&headers=1