Photo full-size preview in text message?

[garybeckvt]

Before I upgraded to Oreo, if I wanted to put a photo in a text message, i could tap on the photo icon and select photos to attach. there was also a way in there i could preview the photos in full size instead of thumbnail. i could scroll thru all my photos in full size and tap a checkbox on the one(s) i want to attach to the text.

this seems to have disappeared in Oreo. I can only see thumbnails when I am choosing photos to attach to a text.

am i missing something or did they remove this feature?

please bring it back!