Folks who were in middle of interviews, but the position got filled/ put on hold, how did it go? Did the HR contact you again for similar position?

Yes, 4 months later that position opened up 😂

Nope. Full ghost

I was in desperate need of a job at the time, so I called the HR and said if there is any change of plans I am open to giving one more round of interview and taking up the job. And so I did. The candidate who cleared earlier might've negotiated for more or might've rejected. And so I had a chance.

Re-Opened after a week in a different team then proceeded with the last round.

No, never

Not only in the middle but it happened to me even after sharing pre offer docs

Yes, it happened to me in the case of offcampus hiring by Zeta during my college days. I was being interviewed for an intern role, which got filled. Later I got a call for an FTE role.