With the XY Pad set to Unipolar polarity and XY Hold on, you can't set the pad location to the origin such that X=0 and Y=0, the both have an positive offset.
Recreate:
Mod Matrix:
X Pad 10% / - / - / All OSCs Pitch Offset
Hold On
XY Hold Off
Play C4
XY Hold On
Swipe into bottom left corner. Pitch will shift up.
Repeat with:
Mod Matrix:
X Pad 10% / - / - / All OSCs Pitch Offset
As a workaround, you could use:
X Pad 10% / Constant 1.00% / Function DIODE(S-C) / All OSCs Pitch Offset
But if you need source and control or source and function, you'll be burning an extra Mod Matrix line and a VAR to use.
Suggest redefining the origin so there is some margin to get to it on the touch pad with XY Hold active.