Whenever I export from Lightroom Classic and do some editing in Photoshop and return to Lightroom Classic on saving, there is always a rectangle at a different light level than the rest of the image. This is corruption, I don't see this rectangle at all in Photoshop and if I reopen the file in photoshop it is not there, just in Lightroom.
It is sooooooooo annoying.
You can see it in this attached image, it happens almost every time I edit in Photoshop and return to Lightroom. I have more examples.
Mac OS 10.15.3, iMac 27" 2018, Benq SW321C Photographer Monitor. Adobe Photoshop 21.1.1 Lightroom Classic 9.2