Hi,
Over in another thread I made some wild unsubstantiated guesses that the
windows issues could have been made much more likely by a somewhat odd bit of
code in PQisBusy():
https://postgr.es/m/1959196.1644544971%40sss.pgh.pa.us
Alexander, any chance you'd try if that changes the likelihood of the problem
occurring, without any other fixes / reverts applied?
Greetings,
Andres Freund