Submitting a new post sometimes creates duplicates (ND)

[cellio]

meta:293638

Occasionally, somebody posts a new question and gets two copies, like in this meta report. I know I've seen past reports of this, but if we have a tracking issue I haven't found it. It seems to be non-deterministic; either that or we haven't characterized it properly yet.

Possibly related, about answer drafts not clearing after posting: https://github.com/codidact/qpixel/issues/1545