I just wanna say before I start this thread that I know what the issue is, I am just wondering if anyone has found a solution. I'm trying to merge a bunch of photos that were taken in portrait orientation, when I import them into photoshop it reads the exif orientation tag, rotates the image, then marks it as modified. When I try to perform the photomerge I get a warning saying "Documents must be saved before they can be merged." I don't think I need to explain why having to save sometimes 10+ images before performing a task I've done dozens of times in the past with no issues is unacceptable for software entire corporations depend upon.
only solutions I've found so far are:
1. got to settings>file handling and tell photoshop not to read the rotation exif data
2. strip the files of their rotation metadata and process the photomerge vertically
neither of these actually solve the problem because when I try to perform anything but an auto-merge with the photos rotated the wrong way, photoshop is unable to complete it.
thanks to the really helpful info found in this 2 year old thread here: https://community.adobe.com/t5/photoshop-ecosystem-discussions/quot-documents-must-be-saved-before-t...
if anyone has any solutions to this please let me know. I've performed photomerges regularly for years and this has not been an issue until this current (25.0.0) version of photoshop.
thanks in advance for anyone's help!