Landmass River and MaterailOnly Problems

When I activate the editable layer, the blueprint button does not appear in the sculpt section at first in the landscape tool.

When I want to create a river, I use CustomBrush_Landmass_River, but I encounter an interesting problem, raising the entire terrain structure or making it look like a collapse.

Finally, there is a problem similar to the problem that occurs in CustomBrush_Landmass_River in CustomBrush_MetarialOnly option. But I can fix this problem by changing a setting.

How can I fix the problem I am having in CustomBrush_Landmass_River. I will share the images about it.

Thank you for your interest

Images:

When I set “Invert Shape” to “true”, looks like below:

Hey, I suffered the same issue raised here - Landscape Blueprint Brushes - River Spline - Content Creation - Unreal Engine Forums

Looks to be a bug added in 4.25. 4.24 works fine.