It'd be hard to show this bug visually, so I'll just type it. I have a large tree farm that consists of a system of hopper minecarts below to collect any leftover drops. I always need to check the minecarts before I use my treefarm, just incase they are frozen or gone. Most of the time they are frozen, but sometimes they just disappear. Its probably due to unloading chunks as I do use my elytra a lot. Its really annoying and it would be great if this bug was fixed. Thank you.
Thank you for your report!
We're actually already tracking this issue under MCPE-21416 so I've requested this report be resolved and linked as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
Please don't forget to use the search feature before submitting a bug to see if it has already been reported. The less time we spend linking duplicates means more time testing and confirming the bugs.
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