ZBrushCentral

Lazy mouse doesn't work on one subtool

Hello!
Usually lazy mouse doesn’t work for me. Even it’s turned on, the brush works like it isn’t (therefor, I mostly have it on). The problem isn’t really this (even if it is annoying when I want to use lazy mouse), but that lazy mouse suddenly starts to work. When this happens and I turn it off, the spacing gets weird and impossible to work with.
I also noticed that this problem only affects one subtool.
This doesn’t happen too often but I can’t find anything to do about it. Any ideas?