Cannot change character's arm thickness in Character Creator (from the Dressing Room)

Steps to reproduce:

1. With Minecraft open, go to Dressing Room

2. Click the Character Creator button or “Edit this character” button to edit a custom character

3. Click the “Body” dropdown

4. Click “Size”

5. Attempt to change the arm size by pressing one of arm size preset (Slim or Wide)

Expected result: The click sound would play and the arms would change to one selected.

Observed result: The click sound plays but the arm size you’re selecting don’t apply to the character you’re editing, so the character’s arm size can’t be changed. (see “cannot change character arms.mp4”)

Workaround: On Windows and Android (as far as I know), as the bug was already fixed in 1.21.90.21 Preview but still affects Release 1.21.80, use the Character Creator in the Preview version of the game.