Hi,
This is a known issue. It has been previously logged. There is no current time frame for when this will be addressed.
Using the brush and manually adjusting in the editor window will no reflect what is show in the details panel. Then adjusting anything in the details panel will reset the brush to those settings undoing any change you’ve set.
This only affects the Geometry brushes. It does not do so with the volumes.
Thank you!
Tim