My watch says that the storage is full and to delete music or photos in which I do not have downloaded onto my watch. How do I clear more storage?

Is this so that you can update?;

If you don’t have enough space to update your Apple Watch

In my case, this is not related to an update. My phone and watch are on most current version OS. If I reset the watch and re-pair, it works normally, but I can see the available storage fill up over about an hour until it is full again. I have not been able to figure out what is eating up the storage. Under Usage, I only have the built in Apple apps installed and they are all under about 10MB or no data used. Upon speaking to Apple Care, they advise this is a known issue, but don't currently have a fix. I'm hoping we get a WatchOS 7.6.2 before WatchOS 8. I would normally be buying the new watch in a few weeks, but I'm probably not going to until I know the issue is fixed.

I'm having the same issue under 8.0. 32GB - and it fills up with "Other" - at the end of the storage bar - in white. I can't figure our what "it" is. I have tried unpair and repair - that works only for a short while.