It's so irritating if you're doing the same operation many times, ie sending the same picture to multiple people separately.
Also the share menu has a different layout according to what app you're using. I understand that it's up to the app developer to get fancy with it, but it would be really nice if you could have a setting for "use standard share menus", or something like that. Or even better if there was some way you could make it be the same every time, like choose your favorite apps to share to.
It's unbelievable that these billion dollar companies can be satisfied letting this garbage represent their product.
I'd make sure to fix these if it was my hobby project, let alone a "finished" product that's on sale by a giant multinational.