camera bug at the end of a match

so while playing games, I use middle click to pan the camera a lot, and when I did it JUST before the nexus exploded it glitched out on me and started moving as if I'd held the camera move button, even speeding up when I moved it far enough like it does when both edge panning and click panning are both used, except it wasn't anywhere near the edge of the screen, and it spazzed around the base while the victory banner was flashing. Didn't prevent me from continuing, but was pretty funny to see. I'm quite sure this happened right at the point the nexus was destroyed and all the player controls are taken away so they freeze. don't know if holding middle click while it dies will produce the same effect or if it has to be very well timed.