Is it an issues with Tapatalk and the reporting users forum software, in this case vbulletin 3.8.7? We don't run vbulletin anymore so this might not affect us, can anyone verify this happening on Geekhack?
It may already be resolved anyway:
Folks - we have identified the issue about some app users sending a preview of someone else notification (though he can't open the message). It is related to app upgrade issue to a very small number of users and today we have cleaned it up and it shouldn't happen anymore. We apologize for this issue that appear to certain users.For the image issue, we also found the root cause and addressed it.