This is happening constantly. Small lines or objects can’t get selected while drawing rectangles for selection, either from right>left or left>right. Small pieces always are left behind.
As for dotted lines, even if I zoom in really close I can’t select them.
Can someone help me? Is there something I should do?
Hmm - I do not know - if I make a selection as you show, and Hide, there are no leftovers here. However I see that not everything is in plane - it is possible, maybe, that could mess with selection - try selecting all SelAll and then ProjectToCPlane > DeleteInput=Yes. Does that help at all with the slection?