Error when getting suggestions of /tag remove with execute

The bug

Cannot get suggestions of /tag ... remove with /execute run command.

How to reproduce:

1. run command
   • /tag @s add A
2. type in chat bar:
   • /tag @s remove
3. then type a space
4. A is suggested
5. type in chat bar:
   • /execute run tag @s remove
6. then type a space
7. no suggestion
8. See logs
9. There's an java.lang.IllegalArgumentException error

Log:

latest.log