Description

When you're in a dimension (Nether or End) and you're teleported by a command block in the overworld, you won't see your experience bar filled anymore. Your levels aren't displayed neither. You need to deconnect/reconnect (or quit/join the world again in single player) to display them again.

How to reproduce

1. Set a Command Block on "Repeat / Always active" mode on the chunk of the spawnpoint of the overworld, when fill it with this command :

execute as @a if data entity @s ActiveEffects[{Id:8b,Amplifier:3b}] run tp @s ~ ~1 ~

2. Create a Nether portal and go to the Nether.

3. Give yourself some xp points and a potion that will apply the effect needed to be teleported back :

/xp add @p 200

/give @p minecraft:potion{CustomPotionEffects:[{Id:8,Amplifier:3,Duration:1}]}

4. Drink the potion to be teleported.

Obviously, there's no screenshot I can sent to you.