[MC-187707] Resetting a world's icon via the Edit button in the Single-player menu causes it to turn into a random texture

Select a world via the Single-player menu, click "Edit" and "Reset Icon".
The icon resets to a random texture, in my case, the Sea Turtle mob texture.

Due to file size limitations, a demonstration has been uploaded to YouTube:
MC-187707

This also relates to & appears to be a new issue:
MC-170468

Comments 1

galaxy_2alex 2020-06-05T20:19:01Z

I'm unable to reproduce this, please force a crash by pressing F3 + C for 10 seconds while in-game in any world and attach the crash report (minecraft/crash-reports/crash-<DATE>-client.txt) here.

Please slso add the launcher log using these instructions to this ticket - please copy the log after the error has occurred.

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