Working in Lightroom and suddenly my 'adjustment brush' tool is auto masking the entire photo I am editing. I must have hit a key on the keyboard. The 'auto mask' box is unchecked (I tried checking the box as well and it does the same thing), 'range mask' is off (I do not think I use this option), and I have restarted the program with no change.
Upon further inspection I tried editing a different photo and the brush did not act the same, I went forward two photos and the brush again acted normal. I removed the photo with the brush issue and re-imported back in. The brush works normally again. What happened?
Is there a keyboard shortcut that I have accidentally turned on this auto-masking?