As has been said before, he alt-tabbed from the game several times, which froze the game stream, invalidating the run

Doug's run is actually just invalid, regardless of it's length. You can't just alt-tab from a run and not record a section of the run because the stream is frozen.

Another note related to Kitchen Glitch I've noticed. The glitch also seems to affect parts of the mines (the paths after the gold sign). It is not a softlock in these locations, but there is no music except for the gold room and the arcade room. If you visit the mines before the kitchen, then you can know if you have kitchen glitch before you softlock the game and can restart earlier in the run.