Invalidate selection reference points on resize
These are used when extending a (possibly empty) selection via shift+LMB. When resizing, a point of reference may easily be out of bounds if it was beyond the last line written. BUG: 464040
These are used when extending a (possibly empty) selection via shift+LMB. When resizing, a point of reference may easily be out of bounds if it was beyond the last line written. BUG: 464040
mentioned in commit 6d67d327