No idea if your problem is included in the following...

Beebom

10 Common iOS 15 Problems and Their Solutions

A number of miscellaneous issues have made iOS 15 incredibly buggy. Here is the list of 10 common iOS 15 problems and their solutions.

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Thank you

The updated operating system also includes a lot if meta info on the pictures it stores now- just including this info in case it is a factor.

https://www.cnet.com/google-amp/news/ios-15-hidden-features-that-will-change-how-you-use-your-iphone/

Now whenever you're viewing a photo in the Photos app, you can swipe up on it to open an information view that will detail where you saved the photo from, as well as all of the EXIF information such as shutter speed, location and the camera used. 

I'll include a couple of photos in case that helps.

I'm unable to get the icon to work at this point. Ohhh until I add some text! That's new... I also opened the other editor functions - so one of those things helped.

>>>Ohhh until I add some text! That's new... I also opened the other editor functions - so one of those things helped.<<<

ok not having luck with this at my forum (private, custom colours)

*** I just successfully added (and removed) 3 pictures.

So it is intermittent and may be affected by custom palate/ background in Zeta
 

In iPad? But that's not Delphi is it?

So I did discover that we can choose to post a smaller size photo (maybe we could always do that) - not sure if that will help.