It seems like you equal Preview’s image preferences with its PDF capabilities. I don’t think that Preview can do what you want, so DEVON might be the wrong place to search for a fix.
Thanks for your reply.
It is image preferences but works for PDFs. If I open PDF files from Finder.app then all PDF files are displayed in one tabbed window.
However it does not work when I open files from DEVONthink.
Thanks for you reply.
I’m using Macbook Air M1 on Big Sur.
If the setting works for you then I have reset everything in my system and re-test if it is working…