Today I found a post that I can't reshare: https://cohost.org/atomicthumbs/post/793690-empty
If I try to do a quick reshare (hold shift + click on the reshare button), the circle spins, then turns red.
If I try to reshare by clicking on the reshare button (and optionally adding tags), clicking on "post now" does nothing. (If I open up the console, I can see that I get a 403 Forbidden error.)
I have tried clearing my cookies, logging out, and logging back in, but the issue persists.