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Related: [List of Issues] Upgrade to a Supergroup
Create a New Group
Send some individual messages to the basic group chat
Upgrade the group to a supergroup
For example by changing the 'Chat history for new users' to visible.
Tap on a message sent before the upgrade to supergroup > Delete
The popup that appears is incorrect, it shows “Unsend my messages” checkbox, when you confirm to delete, the message is not deleted.
A popup that asks you to delete for everyone or only for yourself appears, when you confirm to delete, the message is deleted.
Any Android Device