Masking issue with Lightroom and ACR

[PhotoMike25]

I am using version 12.1 of Lightroom Classic on a Windows 10 system and a Wacom tablet (v6.4.0-11).  I have noticed that when I edit a mask using a brush and the flow is set to 100 that I have to go over the area multiple times before the mask is fully removed.  I have replicated this in versions 10, 11, and 12 of Lightroom Classic and in ACR.  When editing a mask in Photoshop I do not experience this issue.

Has anyone else experienced or is experiencing this issu?

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

[kentdesign]

Have you checked the other settings of the brush?

[PhotoMike25]

I have checked all brush settings

[drtonyb]

Please provide more details. Do you have a Mask in place and are you trying to remove parts of that Mask using a Brush mask?

A screen shot or short video clip of what you are doing would be very helpful.

[Ian Lyons]

Check that Auto Mask checkbox at bottom left of the Brush slider panel isn't active.

[dj_paige]

What happens if you disconnect the Wacom and brush with the mouse?

[TheDigitalDog]

+1 for trying without the Wacom or when hooked up. There have been a number of differing reports of issues with that product line. 

[kentdesign]

Regarding the wacom, I would also suggest you uninstall the wacom driver, then download and install the latest Wacom driver for your tablet. An old or even corrupt driver can cause weird behavior.