I am sure this is a deliberate feature. If it is adjustable, fantastic, I just cannot find the adjustment. If there is no adjustment, then, well, I guess one of the benefits of Atom is we all can make our own editions.
The feature I am writing about is the one that does NOT replace highlighted text with key entry. In most circumstances, Atom replaces highlighted text with whatever text you either type or paste.
This is not so bad, because the highlighted text can then be deleted with a single hit of the delete key. But still, my preference would be to disable anticipatory edits. I find it confusing when I hit one key and something besides that key’s character appearing once shows up. Can that be turned off?