I'm sorry to hear you're facing these troubles. I've done quick tests here, but it seems to work just fine. As it's really hard to say, what's happening exactly in your scene just from the provided description, if possible, please feel free to send us
your scene (ideally simplified and containing just this problematic object(s)) to our support team
to check it here. In case of a big file size, please use a web-sharing service like WeTransfer. Ideally, if you'll be able to reproduce it on a minimal scene, which you can send us, it would be great.
Thanks in advance for any further details you can share about it with us / our user community (in case some user(s) will run into similar troubles).