When I try to use the adjustment brush I slide it across the workspace as normal then when it hits the edge of the photo it will not move beyond the edge of the photo. I can move my mouse back and it tracks fine. I can move it around the photo but once it hits the edge of the photo it stops tracking. This has rendered using the brush inoperable.
Ian, thanks for the help. I reset the preferences and it seemed to work but the bug is back and not sure what is causing it. The brush tool hangs on the edge of the photo and I am unable to drag into the photo. I can move the cursor around the photo but not through the photo. If I click and hold it appears that the brush is affecting the area but I have no control and its unusable. I can share videos of this bug.