Weird xp points

Summary:
In Minecraft Bedrock edition, there is a bug that the xp points sometimes do not enter the xp bar.

Steps to reproduce:

1- Kill many mobs to gain xp

2- Or you can take several bottles of xp and throw a lot on the floor.

3- Try to get the xp points.

Observed results:

Every now and then, some xp points don't go into our xp bar at all.

Expected results:

All xp points should enter the xp bar without any problem.
________________________________________________________________________________________________

I just want to remind you that this bug only happens sometimes. It doesn't always happen, but this bug happens to me a lot. I left two videos down there. So you can see that I can't get the xp at all.