If I hit the "+" and choose to attach an image, I get a list of thumbnails, many are empty and display as white blocks. Some populate, mainly from the "DCIM/Screenshots" folder on the device. Another location that does seem to display properly is the contents of the "Pictures" folder on the internal storage. Recently taken pictures though are all blank/white, these are in "DCIM/Camera".
My wife noticed this behavior earlier in the year on her phone after some updates. I only recently allowed those updates and now I've got the same problem.
I've tried clearing google photos, camera, messages and gallery app storage caches with no luck.
Any ideas? Attached is what the screen looks like when attempting to attach an image to an SMS. (I blanked the name of who I was sending this to.)