I can get the Overlay image shortcut to work when I use an action to choose the image from the Photos app.I can have it positioned in one of the corners as required by turning off the option to show image editor. No problem to insert a calculation to make the size of the watermark be affected by the size of the main image.
If I send an image to be watermarked from the share sheet it only works if I show the image editor. That would get tedious with bulk watermarking.
I know the share sheet thing is working because the image arrives to the Overlay action and works when the image editor is switched on.
Is this a bug in Shortcuts with this action?
I used Magic Variable to set up the shortcut and I also did it again with the set variable action used and I had the same problem.
I tested that the share action was working by putting in a Quick Look action - It was working OK.
Here is my shortcut - https://www.icloud.com/shortcuts/df70773f02d14ef9bb595037f70a934e
As I was writing this I was testing again. A couple of times it worked from the share sheet. I’m baffled by what could be going wrong with this. I’m probably doing something silly somewhere…