The bubble on pyraniq's comment seems to be linked to the bubble for the main post of the PR:

If I expand the original post, both bubbles disappear. If I try to double tap on the bubble for pyraniq's comment, it gives the main post a thumbs up. Using FLEX it looks like these are the same view 馃
We not hiding it on prepare for reuse maybe?
@Sherlouk I bet you鈥檙e exactly right
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Ahh think I found the fault: https://github.com/rnystrom/GitHawk/pull/1406/files#diff-7a2ac7b42147b46d47c53153b3ab62fbR287
We cast to a base cell, in the screenshot above it's a review cell which AFAIK is handled differently
So yea it's most likely a prepare for reuse, but caused by the above line not matching
@Sherlouk aha! Great find. Wanna PR it real quick?
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Actually I was wrong, review cells can cast to IssueCommentBaseCell - so actually not sure
EDIT:
Hopefully helps with debugging