As the crop tool is not working properly, could you please try deselecting "Use Graphics Processor" located under Lightroom's Preferences > Performance, then relaunch Lightroom and let us know if it helps?
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Does anyone have a link to a relevant Adobe contact I can report this to?
Please add details of your issue to this bug report in the official Adobe feedback forum, where Adobe wants all bug reports posted: Lightroom Classic 7.3: Crop tool showing last image (GPU on) | Photoshop Family Customer Community . Be sure to click Me Too in the upper-right corner. That will make it a little more likely Adobe will prioritize a fix, and you'll be notified when the bug is fixed.
As Sahil indicated, a temporary workaround that has worked for some others posting in that bug report is to disable the graphics processor.
ok, thanks guys, reported.
i specifically bought this 15-inch MacBookPro for the dedicated GPU for Lightroom! I am not inclined to disable it for this bug. Hopefully it will be corrected as will the other GPU-related bugs I’ve been reading about.
This isn't a new bug. I also had it in Lightroom 6. When I upgraded to CC Classic I checked all my settings and had forgotten why I had disabled my graphics processor. So I switched it back on. Then I realized that it was because of this bug. No excuse for this to not have be resolved ages ago.