Whenever I waterlog stairs, slabs etc. the game sometimes "forgets" they were waterlogged and I have to waterlog them again. This has become very frustrating when building underwater. I don't know if this affects all waterlogged blocks, but I see it with prismarine, quartz, and stonebrick.

     Another issue that I've seen is that when inside underwater buildings, I get blue visual glitches on waterlogged blocks. However, it's only when I'm further away. When I get close, they go away.