All worlds have the play icon

Is "Touchscreen Mode" enabled? (Options → Controls)

yes touchscreen was enabled thanks for letting me know

This is a feature of touchscreen mode.

Thank you for your report!
We're tracking this issue in MC-5130, so this ticket is being resolved and linked as a duplicate.

That ticket has already been resolved as working as intended, which means this is not considered a bug and won't be fixed. Please do not leave a comment on the linked ticket.

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...different bug?