Was idling around in an AIx Uveso match when the ai nuked a bunch of rambo presets I had. Not sure if that's what triggered it, but that one nuke left behind a permanent explosion, triggering nukes endlessly, blotting out most of the map with sunspot that never went away and killing any unit that entered it's radius. Pretty funny. Here's a replay but it occurs quite a ways into a long game, so I wouldn't recommend watching unless you have a tool to skip around with:
Perma Nuke Glitch (wtf boom)
This is a Nomads game. If the same does not happen in the standard featured game modes then it is a bug with Nomads. You can report those here
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