Shift + R Repeat not working

Hi cositsking, the 'repeat last operation' is not available in Sculpt Mode. (Making a stroke with a brush is not an operation...)

When in Sculpt Mode (and sculpt changes (meaning mostly: getting new features) very fast per Blender Version) CTRL+R activates the Remesher and SHIFT+R shows that grid with the resolution of the Remesher and you can move the mouse to interactively change that resolution: left-right changes it 'normally' and up-down changes the resolution in smaller increments.

I might've not been specific enough, I use it when masking for softening and sharpening the mask area. I was using it earlier all this week and it was included in the sculpting fundamentals tutorial. Nice to know what the SHIFT + R does with the grid though I can see myself using that. 

This tutorial on CGCookie mentions using it for this purpose exactly in this way and my screenshot can show that it's bound to that key. https://cgcookie.com/lesson/masking-visibility-2-8 Note at 2:40 when he says "press shift + R" Perhaps I can change the hotkey associated with it. I was using blender 2.9 earlier this week and maybe they changed that, I think I was using 2.83 for at least part of this yesterday. Anyways Im back on 2.83 LTS and will try and figure this out today somehow, I love the shortcut/

SHIFT+R has not worked officially in Sculpt mode until 2.83, in 2.80 in Sculpt Mode you only had R for Angle control.

In 2.82 you had this:

and since 2.83:

But you are right, what Kent mentioned at 2.40 did work up until 2.83, when they added the SHIFT+R hotkey, which overrides the 'last operation'. If you want that behavior back, you could change the hotkey for 'Edit Voxel Size' to something else and then SHIFT+R will work as in 2.82 again...

Thanks I was able to learn a great deal from your replies and bind a key to repeat! 😊