Reporting for only villagers. 3 villagers despawned realms 1.18. along with a named zombie villager (uncured)
Zombie villager: (in boat, under shade, time=night) i log out.10 seconds, friend logs on. checks and zombie villager gone. boat exists. both entities were not near any chunk borders (checked with chunkbounds, mcpedl) and no alt+f4 as android phone.
villagers: one lost when afking ish 100 blocks away. difficulty changed from peaceful to easy and back. two lost when entering nether to xray for debris. difficulty was changed from easy to peaceful.
also, idk if this is a new bug, but entities can go invisible when player leaves boat. leaves a dark circle below where it last stood. (which states i exist) Then idk lag or smt, the image shows but only for split seconds, Not in the original spot. Fixed by save&quit, then rejoining.
Updated to 1.18.1, villagers named. no problems so far. they are almost constantly rendered and monitored trough spyglass (when i needed paper to lock in mending trade)
additional info: playtime was about 4 ish hours with breaks every hour or so. villagers were from a now dead 1.17 village. one from 1.18 village that despawned. current ones are from the same 1.18 village.
Disappearing boats and riders is tracked at MCPE-125388.
can be confirmed on redmi note 8 pro on 1.17 versions, latest 1.18.12 on POCO x3gt has a stray line beside the jump btn. looks like a hairline.
it just happens, no real way to replicate.
Device specs:
Mediatek dimensity 1100
8gb ram 256gb storage
MIUI 13 (based on android 12)
Mali g77 MC9 (gpu)