hlevinger wrote:
I hope this clarifies. Also see other poster’s (OIS48) screenshot showing the upside down text effect in markup in Photos (I believe). That screenshot echoes my experience exactly.
OK. There are two of you.
I did try to reproduce this in Photos, and I couldn't. I tried rotating the image and then marking up. No problem. I've never seen a problem like this in Preview.
However, I have seen this exactly problem in various odd-corners of software development. There is a concept of "flipping" of coordinate systems. Sometimes point (0,0) is in the upper left hand corner and sometimes it is in the lower left corner. There is no real rhyme or reason for when something might be flipped and when it might not be. I'm honestly surprised we don't see this kind of problem more often.
My next question, for both of you, would be to ask what kind of display you are using? Are these external displays? And can they be rotated?
Also, have you tried restarting? When Mac OS X was first introduced, people were so happy that it didn't crash as much as the old MacOS system. People started going for long periods between restarts. But now we are back to a period where more frequent restarts means a more stable system. Maybe you can't AirDrop anymore or your cursor sometimes disappears, or some other strange problem that magically goes away after restart.
Next question would be what kind of computer you have? Do you have an old Intel Mac? Or a newer iPhone with built-in keyboard and display? Let's be honest, that's what the new M1 machines are. 😄 But there is a big difference in this "flipping" behaviour between iOS and macOS.
My best guess is the display. The lowest-level graphics hardware knows the display is, or should be flipped. But then the text and markup is using a different set of APIs that is somehow missing one of the flips and showing up upside down.
And I'm not familiar with this icon:

What is that? Some Camera interfacing with the display? Another very likely candidate is some 3rd party system modification that isn't doing all this flipping perfectly. Maybe it was designed for Intel macOS where everything is flipped. Or maybe it has internal logic to change the flipping based on the graphics platform and now it thinks it is running on a phone. Or all of that is opposite. Either way you flip it, you're flipped.