Joining other multiplayer world through invite while using a skin from the Mario Mashup in a world softlocks the game on Switch

Steps to reproduce:

1. Make sure you equipped a skin from the Super Mario Mash-up on the Nintendo Switch or Nintendo Switch 2 (latter requires claiming)

2. Open a world on both devices

3. On the second device, open the pause menu

4. Click “Socials”

5. Click “Invite to game”

6. Invite the one that is playing on the Nintendo Switch

7. On the Nintendo Switch, click the “-“ key to make the reply

8. Click “Accept”

Expected result: The Nintendo Switch should accept the invite by leaving its world, and then join in the world hosted by the second device.

Observed result: The game softlocks, and workaround has to be done or the game has to be force quit.

Video (Super Mario Mash-up Pack on Nintendo Switch):

Note: This issue can also be reproduced on Windows / iOS with “skin pack test“ instead of the Super Mario Mash-up, which “skin pack test“ can be downloaded from MCPE-239565, not applicable to community ports of the Super Mario Mash-up Pack that have the gates removed.

Suggested solution: Make the Super Mario Mash-up Pack not platform restricted (usable on cross-platform multiplayer), like what community ports did.

Workaround (discovered in 26.30):

1. On Nintendo Switch or Switch 2, press the “-” key, On Windows with XBOX controller (iOS not applicable), click the View button, On Windows with keyboard (as far as I tested) hit the F4 key, you’ll then be kicked from joining the invite but can break from the softlock.

2. If the friend then hosts the world in the Play screen, then you can join in from there, Do note since 26.52, the gates are tightened so the gate-kept skin will be failed over to a default skin (at least to other players), so you might also need to do workarounds from MCPE-243495.

Note on the workaround: Do not use in game snapshot feature before finishing the workaround, otherwise the game will softlock further and needs to be force quit!