[MCEE] Education edition keeps crashing

We are not using any behavior or resource pack, it is just vanila MCEE(v1.14.50).

Each of our maps are about 20MB which means pretty small.

Maps have some command blocks with simple commands in it.

We tested our maps on several computers, they shows high cpu usage before crashing.

If we try to use Makecode, it gets worse.

 

repro steps

1. run MCEE(v1.14.50)
2. open a map
3. play or use Makecode
4. tada~app crash.