Scrolling through profile photos of a group that has more than two photos set, the last photo is not visible clicking the screen right edge like other photos, but you have to swipe right-to-left. The same but opposite gesture is required if you start from the first photo and want to reach the last one; you have to swipe left-to-right to reach it, while clicking the screen left edge will take you to the penultimate one.
When editing group profile photos as an admin, uploading some photo formats (GIF and maybe WEBP) makes the client display only the first photo of the group (or, namely, the last uploaded photo), making impossible to scroll through them and delete one photo in particular.
— Fourth bug
Linked to the previous point, deleting the first and only photo shown by the client, all photos are removed instead. "Deleted photos" are not completely lost, as when you upload a new photo all previous set photos but the one really deleted get back in profile photo history.
— Fifth bug
When deleting the service message related to the latest group profile photo change, the related image is not deleted from the group profile photo slideshow, as it happens with other photos.
Good luck!
Steps to reproduce
— First bug
Go to any supergroup with more than two profile photos set;
Open the group profile photo slideshow;
Try to scroll through the photos;
See that the last photo is skipped everytime you try to reach it by cycling through photos via click on the screen right edge ("positive" scrolling) or the screen left edge ("negative" scrolling);
Note that you can reach the last profile photo by swiping right-to-left starting from the penultimate photo, or swiping left-to-right starting from the first photo.
— Second bug
Go to any supergroup with topics enabled that you have the right to change info in;
Open Settings;
Having already at least one photo set, set a new profile photo uploading a GIF image;
If the image is not an MP4 GIF, see that the client sets a static JPG frame of that GIF.
— Third bug
After following the previous steps:
Open group profile photo slideshow;
See that only the last uploaded photo is shown here.
— Fourth bug
After following the previous steps:
Open group Settings again;
Open group profile photo slideshow (edit mode, since you are in Settings);
Delete the only photo shown here;
See that all photos are removed from the group.
— Fifth bug
Having previously changed a group's profile photo for at least two times, and not having deleted the related service messages yet, go to the group chat and:
Delete the last photo change service message;
Go back to the chat list, wait about ten seconds, then open again the group and the group profile photo slideshow;
See that the last set profile photo is already here.
Then, go back to the group chat and:
Delete the penultimate photo change service message;
Go back to the chat list, wait about ten seconds, then open again the group and the group profile photo slideshow;
See that the last set profile photo is already here, but the penultimate profile photo has been removed.
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