It happens when there's a bit of text I want to delete. Typically, the start of my selection will be at the end of a line of text, and the end of my selection will be a couple of rows down. I generally put my cursor at the end of the line where I want the selection to start, then press SHIFT and click at the point where the selection is to end.
What then often (but not always!) happens, is that the end of the selection will be okay. But the start of the selection will have moved up from the point where I actually had set my cursor in the first place.
I give the attached screenshot as example. For the screenshot, I've made the hidden symbols visible. When I'm working they're not.
What happened there is: the cursor was at the end of the first highlighted line, after the word "aandacht". I then pressed shift and clicked behind the word "die".
Instead of highlighting just the two pilcrows and the first few words of the line I wanted deleted, suddenly the entire top line had been selected as well. Atlantis suddenly hasn't highlighted what I thought it would, so in these case I really have to watch out not to routinely press delete at this point. Which is the reason it bothers me.
In this case it was just a few extra words that were wrongly selected. But sometimes it can be half a paragraph north of the point where I thought I'd started my selection.
The weird thing is, as soon as I click somewhere to undo the selection, and try again, Atlantis does what I want.
But why does it fluke so often on the first try? Is that a buglet? Is there something I could be doing wrong?
Hope this is clear.