Upgraded to 1.1.0 RCBugFix. Is my UBL working?

[Roxy]

Should I change my gcode startup scripts to G29 L0 to load the tables before printing? Should I run G29 P1 often? How does one go about using it?

Well... It depends on how you want the system to operate. I want the bed leveling system alive and working when the machine powers up. If you want that behaviour, you do a G29 S1 to save your mesh. Do a G29 F10.0 to set the fade height. Do a G29 A to activate the system. And then do a M500 to save the current state.
When the system powers up, it will automatically load mesh 1 and the system will be active. In this scenario... You never need to do a G29 but the system will be alive and working.

Also... I see unprobed mesh points on the right and on the top. You can get rid of those (fill them in) with a G29 P3 T

Also I don't get it why the printed doesn't "remember" the table after a reboot, even after using M500 after a G29 P1. Or does it?

You need to save the mesh in one of the mesh slots. I typically use G29 S1 If you are not saving the mesh... Are you using the G26 Mesh Validation Tool? That (and G29 P4 R) is how you get the mesh perfect. And as you get it better and better over a few iterations... You can save it to a new mesh slot so you don't lose your original mesh.

BTW Thanks Roxy, great work!!!

Thank You. You are very welcome.

EDIT: This is my Configuration.h M48 gives a solid "Standard Deviation: 0.001225"

That is pretty good!!!!