Too long, don’t want to read. Too long, don’t want to read. OSX Preview results in fuzzy and pixelated images where you were expecting vector PDF data to be copied and pasted. This resulted in many equivalent types not being recognized as valid PDF data mac set preview as default pdf the clipboard.

Identify uninstall the app by looking through the UTI registration database with lsregister. This indicates it’s line 49934 that has the active mapping, whereas we wanted it to be on line 36795, which is the internal apple mapping with all the appropriate metadata. So now we need to guess at the file that this implicates. Here is my current way to do this. This isn’t entirely reliable, but I think it should work in most cases. So the offending app is likely to be Notability. I reset the UTI database.

Then I reinstalled Notability and everything was bad again! I was annoyed by this because it seems like this should be impossible. The app that caused the problem, Notability, was installed via the macOS app store. These are apparently super-sandboxed in terms of what they can do on the computer.

Or so I’ve read in the past about these apps. Yet this particular app was able to disrupt a key feature in my daily usage of the mac between two entirely separate applications! How can this totally corrupt my system even outside of apps that don’t use this information? This appears to be a simple app configuration mistake. Why aren’t these checked as part of the App Store application process? The reason to write these editorial comments is not to complain, but to see something change. But the best software and products are built by those who care deeply about all the issues and I want to work with software built by such people.

It’d be great if some check of overriding core Apple types was added to the macOS app store review process. And I’m hoping that the Notability folks fix the issue with their app now too. The starting point is one of the greatest things about using macOS. I spend substantial time editing slides that have graphs, equations, and figures. This often involves pulling an equation or figure out of a published paper to comment on it in the slides.

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