What is causing the issue of not being able to attach any files to messaging apps from external?

[AC Question]

Nexus 6p. Not able to attach any files that are not stored locally. Example is to share external from the Facebook app to google messenger or even their own messenger app. If I download the file then I can attach. Another example is attaching a photo from Google photos to any messenger app. I have to go to photos and download or share it from photos.

 

[Andy Schueller]

This is happening on more than one device. This feature used to function great.