Help! Is this a Bug in UE5.5 Foliage Painter or Have I Pressed a Shortcut Key Accidentally?

Hi all,

I’m experiencing a problem with the foliage painter brush in UE5.5. The blue brush has gradually faded during recent sessions and is now completely invisible in my main project map. I can still paint foliage down, but I cannot see the brush.

In a new test map, the base circle of the brush is visible, not the full dome.

I’ve attached images for reference:
Image A: Shows Current map, invisible brush.

Image B: Shows New test map, partial brush visibility.

Image C: Shows Example of expected brush appearance. (Image taken from Google).

Is this a known bug, or have I accidentally changed a setting? Painting without seeing the brush is incredibly frustrating. Any help would be greatly appreciated.

Regards, J