Adobe Lightroom Brushes

[Blythe5DB6]

A few updates ago, my brushes have stopped working in lightroom. It also wont show where the brush has been applied while before it has shown red to the area that I wanted to apply. I have hit the letter o and while it shows that lightroom is recognizing it, still no red. 

{Moved from Lightroom Cloud to Lightroom Classic Forum by Moderator} 

[Peru Bob]

I've moved this from the Using the Community forum (which is the forum for issues using the forums) to the LR forum so that proper help can be offered.

[Rob_Cullen]

And what are your Flow and Density sliders set at?

Zero 'Density' will show as in your screen-slip.

The Mask Overlay can also be changed in color. 'White' has sometimes confused people! [SHIFT+O]

My screen-clip is for '-4 Exposure' and the White overlay-