Summary:
When opening the pause menu with the Cartoon, Halloween, or Steampunk resource pack enabled, the following buttons don't appear:
Resume Game
Settings
Marketplace
Save & Quit
Note that the buttons aren't invisible; they're simply not there. This can be verified by clicking where the buttons should be. Nothing will happen. This makes it impossible to leave a world without force closing the game. This issue doesn't occur in 1.21.44.
Steps to Reproduce:
Open a world with the Cartoon, Halloween, or Steampunk resource pack enabled
Open the pause menu
Observed Results:
The buttons listed above don't appear.
Expected Results:
The buttons should appear.
Screenshots: