I got a video of it. I don't 100% understand it, but it seems to occur after a powerplay.
I try to make a line change to put my 1st line on the ice. Shane Wright is on the 1st line. He jumps on the ice, then jumps back to the bench with Burakovsky playing the 1st line instead. I try again, this time Wright stays on the bench.
I am pretty sure its caused after a powerplay ends, that's the only time I've seen it happen anyways.