Copy + Paste now reliably captures bottommost and rightmost edges

Previously when you copy and pasted a region with edges along the rightmost and/or bottommost border, the edges would sometimes not get copied. For example, take a look at this image that @Learuis put together:

You can see that the rightmost and bottommost edges were not copied… mostly.

Well now they will be :slight_smile:. Thank you @Learuis for reporting this bug.

Happy Shmepping ya’ll!