Thanks for letting us know. I can indeed reproduce this on the Android app - the easiest solution for now I think is to try and replace the image and see if the issue persists.
Hi, I’ve now created a ticket for this as it looks like it’s more widespread than expected - internal code BA-7182.
In the meanwhile, I would still attempt the solution above - I don’t believe there are limitations based on the type of file you use, but please try to replace the image with a smaller version of it, and consider using a .jpg version of it if possible.
Our team will investigate the issue as soon as possible, however sadly I won’t be able to give you a timeframe for the fix right now.