Cannot save pivot & mask brush radius

Everytime I use the lathe tool, I need to centre the pivot.

And even after the pivot is centred, I need to do it again and again each time I need to move/scale the lathe object.

I mean, I don’t mind adjusting the pivot for once. But it’s like I cannot save my preferred pivot.

I was also facing this little issue when I use the mask tool.

Since I use the mask tool a lot when trying to adjust the vertices/edges, it’s a little bit annoying that I have to lower the radius each time I click the Mask Tool.

I don’t know if it’s normal or if it’s just a bug…