I noticed, however, that you neglected to mention the steps for me to reproduce this. If you can get me a reliable repro or a show file that I can load to turn these LEDs on I will gladly try my hardest to get someone to fix this. ;)
Just to confirm, when this happens there usually aren't any side affects that interfere with console operation. Did anything else happen to go wrong, or was it just a charming afternoon of programming with these LEDs on?
I've seen this off and on randomly over the years that I think nothing of it as a LED update cough. It used to make me worry, now not so much. There's nothing really I could do to reproduce it. It just happens once in a blue moon.
...and yes - it was a charming afternoon of programming out on the freezing tokyo bay.