LRC Healing tool not working

I am using Mac Air and LRC cat 13.2 When I click on the band (healing tool)between crop and red eye the image turns black and white negative. In the earlier versions I used to get brush with which I was able to remove spots. How to make the healing tool work so that I can autofill small patches

You have turned on the 'Visualize Spots' option at the bottom.

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You likely have Visualize Spots checked in the toolbar (do View > Show Toolbar):

If it's unchecked and the problem still occurs, please post a full-resolution screenshot (not a phone pic) of the ENTIRE LR window.

You need to ask program questions in the forum for the program you are using
To ask in the forum for your program please start at https://community.adobe.com/
Moving from Using the Community (which is about the forums) to the correct forum