I'm having the same problem as Dana had. This happened after I updated the firmware to my UM 2+ yesterday.
Before update, the nozzle's initial move was ramping down to start the print after priming.
;FLAVOR:UltiGCode
;TIME:12740
;MATERIAL:33484
;MATERIAL2:0
;NOZZLE_DIAMETER:0.4
;MINX:12.304
;MINY:7.123
;MINZ:0.2
;MAXX:212.283
;MAXY:212.483
;MAXZ:10.95
;Generated with Cura_SteamEngine 4.5.0
M82 ;absolute extrusion mode
G92 E0
G92 E0
G10
;LAYER_COUNT:66
;LAYER:0
M107
G1 F600 Z1.2 <-----------------------------Nozzle plunges down to plate (into the blob) right after priming.
G0 F3461.5 X40.993 Y43.23 Z1.2 <-----start of the print
;TYPE:SKIRT
G1 F600 Z0.2
G11
G1 F1500 X41.74 Y42.533 E0.08173
G1 X42.298 Y42.022 E0.14226