The hatch grid is set to 1, but hatch should have no effect on this pad.
The two rectangles are components with a single pad decal. The footprint should always show up as solid and not hatched sine a part will be soldered on top.
PADS will shift from Flash/Drag plotting, to copper fill in some situations (eg spin a std SMD part 45' (non orthogonal), and it changes to copper fill)
I think you may have triggered that plot-change, either with the unusually large size, or maybe the radius corners ?
Once you change to copper-fill, there is a PAD Fill Width number in CAM & with Augment on the fly ticked, it seems to auto-scale the PAD Fill stroke grid when I change Fill-Width.