[BUG] Incremental status being lost / not syncing

I use RemNote in the browser and on my Galaxy Tab S10+, and when I mark a PDF as incremental rem, sometimes it doesn't get added to the number of incremental rems in the bar that appears on top (see screenshot, the blue number) but does on my tablet, or the other way around.

I've also had the issue where PDFs 'died', so when I removed the incremental tag and added it again, they never counted against that number again. I only solved that by switching to a new knowledge base, but after a week these issues started to happen again.