Brush gets stuck when I try to to subtract part of a mask

[Eduardo_Martins8684]

I am having a problem with both Lightroom Classic and Lightroom CC. When I use the brush tool to subtract part of a mask Lightroom stalls. The brush itself will continue to subtract, but nothing else works. I cannot move on from the brush to another tool, close the mask, or do anything else. The app freezes. This does not occur when I use the brush to create a mask, only when subtracting. The apps will not even shut down. I need to force quit. 
Macbook Pro, M4 chip, 48GB RAM. MacOS 26.0.1 Tahoe.
Lightroom Classic 15.0
Lightroom CC 9.0

Is anybody else experiencing the same issue?

[nikunj.m]

Hi, we're sorry about the trouble and the delay in responding. 

Are you still experiencing this behavior? If yes, please ensure that both Lightroom and Lightroom Classic have Full Disk Access on your Mac using the steps mentioned here: https://adobe.ly/3XaM3ST

Also, please install all available macOS updates along with the latest version of Lightroom Classic (15.0.1). 

Let us know if it makes a difference! 
Thanks,
Nikunj