macOS refuses to accept default PDF viewer

[Achiever]

New M2 Mac mini with a clean install of 13.2.1 and all apps. I use PDF Expert as my default PDF viewer, and have it set as such in the app. When I right click a PDF and select "Open", it also shows PDF Expert on top as "Default". But, anytime I double click a PDF, this machine insists on using Preview to open the PDF. I deal with PFSs a lot, so having to manually select the desired app every time will get tedious. Has anyone else experienced this? Is there another setting I try to rectify this? TIA.

 

[MacGizmo]

Just to confirm: You have clicked on (but not opened) any PDF in the Finder and hit ⌘i and changed the Open With box to PDF Expert and hit the Change All... button, correct? (see image below)

 

[Achiever]

I did. It didn't work until I did the following: changed it to Preview as default, with Change All, then rebooted and changed it back to PDF Expert, Change All. That (finally) worked. I was opening PDFs every step of the way and it didn't revert until the final step.

 

[MacGizmo]

Yeah, sometimes you have to redo the change. Not sure why though. In any case, glad the issue is resolved for you, because that would be mind-numbingly annoying to deal with day-in and day-out.