Yup...still in 1.14.4 pre-6
It's still in 1.14.4 pre-release 4 and when i travel with a villager in my boat on water for some time, my world freezes and chunks stop loading, mobs freezed, commands didn't worked anymore...even trying to exit the world didn't worked, it freezed at "Saving World", i had to restart Minecraft. Mojang i'm begging you to fix chunks related problems because they are killing Minecraft at this point.
I can confirm this issue too...It's happening in my world on the latest snapshot 19w34a for Minecraft 1.15. I've been watching my Bee farm on my main world and i've realised that the Bee Hive (the ones that you can craft) don't fill up with honey at all, but the Bee Nests (the ones that natturaly spawn) are getting filled fast because i have like 7-8 bees and they work the same on each Bee hive and Bee Nest. I currently have 1 bee nest and 2 bee hives and those 2 bee hives we're never filled. Mojang...please fix.