Upgraded to 1.1.0 RCBugFix. Is my UBL working?

[Roxy]

A G29 W will tell you What G29 thinks about the world. Very early in the G29 W report, you will see what it thinks about a Fade Height. But if you lower the nozzle down to 1mm above the bed, when your travel in either X or Y, you should see the nozzle go up and down to track the bed.

The G26 is good to do when you first get setup. The printed pattern will help you determine if every mesh point is accurately defined. If some area of the bed is not perfect, you just move the nozzle over that area and do a G29 P4 R to edit the mesh points near the nozzle. (And of course... save the updated mesh with G29 S1)