A subset of brushes behave as "anchored" brushes, in that they do not
apply to the surface continually underneath the cursor, but have a
starting point and then are influenced by the mouse movement. These
brushes behave oddly with tablet pressure sensitivity, as they cannot
modulate over the course of the stroke without causing odd behavior.
Currently, the pressure is only sampled at the very beginning of the
stroke, which makes it difficult to control intuitively. Further work
can be done to improve this behavior (e.g. D6603).
The full list of brush types affected is below:
* Grab
* Snake Hook
* Elastic Deform
* Pose
* Boundary
* Thumb
* Rotate
* Cloth with Grab deformation
Resolves#83697
Pull Request: https://projects.blender.org/blender/blender/pulls/146825
0e2316c2bc