[matrixagent]

I think you might interpret the word more harshly than I intend it to be. Something that worked before Big Sur is not working in Big Sur. It's broken. That's all there is to it for me as an end user. Of course there is a difference in reasons for things breaking, and I'm not denying that Apple might have "improved" Preview.app when you judge it by how well it adheres to a PDF spec. But it still "broke" a very common and normal workflow by doing so, and I would at least expect them to acknowledge that. If they decide breaking this is worth it, that's absolutely fine with me. But I don't think they are even aware of it, and that is not something I'm willing accept from a company with the reach and resources of Apple.

[zepto]

Are you happy to accept corrupt PDFs being generated by ABBYY, a company that does nothing but write software to produce PDFs and yet hasn’t even commented, let alone maintained their software?

Do you think ABBYY is even aware if the issue?

It seems like you expect Apple to test everyone else’s software, and make workarounds for their bugs.

Regardless of Apple’s scale and resources, this is obivously unreasonable.

Also you say: “That's all there is to it for me as an end user” as if you didn’t understand anything about the complexities of software development, but reading your comments on other topics, you are obviously skilled in the art. You are not ‘just an end user’ who doesn’t understand the complexities.