Adobe Lightroom Classic is capturing your screen

…it is a bit alarming to see that your screen is being captured.

By @johnm69118719

macOS is overstating what is happening. It isn’t recording video, for example. Apple is trying hard to block as much malware as it can, so they made a change that any application needing to read the screen for any reason — including something as simple as you clicking a color sampler tool to get a color from the screen — needs user permission. For a trusted application like Lightroom Classic, this is OK. If the warning comes up and you don’t recognize the application name, that is why macOS wants to make you aware of it, in case it’s a stealth malware app.

Here is a longer explanation, and how this decision by Apple has affected a wide range of Mac apps.

https://community.adobe.com/t5/photoshop-ecosystem-discussions/photoshop-requesting-access-to-record-my-computer-s-screen-any-comments/m-p/11339879#M353263

Here is the Apple info answering your question as to where to find this setting:

https://support.apple.com/guide/mac-help/control-access-to-screen-recording-on-mac-mchld6aa7d23/mac

The color sampling tools, as well as any tool that contains a small loupe, use the screen capture functionality to display the feedback in the particular tool. This is normal behavior. Sometimes Mac's security asks permission if it hasn't been granted for a while. 

Make a full-resolution screenshot (not a phone pic) of your entire screen and post it here, so we can see all the details.