Filters > Map > Crop grid > Crop rectangle grid... (manual)
Or
Layers > Crop grid ...
Here is the second options.
Tested for the conditions:
Crop rectangle grid and Cropped grid from selection, and the plugin ran perfectly.
Thx!
	
	
Or
Layers > Crop grid ...
Here is the second options.
Tested for the conditions:
Crop rectangle grid and Cropped grid from selection, and the plugin ran perfectly.
Thx!
                               .....
Samj Portable - Gimp 2.10.28 - Win-10 /64.
	
Samj Portable - Gimp 2.10.28 - Win-10 /64.

