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The screenshot shows comments somehow being nested multiple levels without an intermediate parent. That's a bug, right? Nesting should only be increasing by one level at a time.
I've observed this happening a ton across many different threads. There's also some weird cases where the top level comment is just a link to "show parent" and... It's not actually top level??
This comment is in reply to a comment I deleted in order to test this theory.
This comment's parent is this comment. And its content is:
This comment's parent's parent is this comment. And its content is:
I think you are right. This reproduced the issue for me.