/3/ - 3DCG

Most operators that take input from mouse delta, like mesh shrink/fatten do so vertically, and if you move the mouse past the edge of the screen it wraps around.
Pose breakdown, push pose and relax pose instead use horizontal mouse movement, and when the mouse leaves Blender it just stops registering (gif related). The maximum and minimum values are therefore defined by the size of your window, and that sucks.

Typing in a number works, it's not ideal.
Is anyone else familiar with the issue / doesn't have the issue / has found a workaround for it?