Sometimes it also occurs randomly even outside the water, but it is more common when entering the water or going outside. Heres a video of what Im talking about

I also checked that it is not a compatibility problem with any other mod but even using only Fabric Api, creative core and this mod the error still occurred. I almost forgot to say that Im playing on 1.20.1 Fabric 0.15.10 and the mod version is 1.7.0

Thanks for reporting this issue and providing examples. Should be fixed in the newest version.