Here’s the website, https://lparchive.org/
And when I’m trying to screenshot it, Notice the coordinates on the top left. That’s where mouse is.
Then what happens when I try dragging down:
Notice how a column on the left is suddenly not darkened, and how the starting point of the rectangle is suddenly to the right (by the same margin)
Just to demonstrate, I’ll take a starting point a bit more to the right…
Really not what I wanted to see, So, it’s messed up because the preview and the actual screenshot are conflicted about this empty column. One of this functions ignores it, and the other doesn’t, so the actual result doesn’t correspond with the preview, and it just captures empty space.