A few people mentioned this today on ch100, but I don't see any bug thread for it.

There's been no small skirmishes since last week. Even the stats page doesn't show any:
http://vendetta-online.com/x/dwstats

Thanks for the report. We're looking into it.

I corrected the issue preventing them from starting, but haven't yet discovered the cause of it getting into that state. Please let us know if you see this issue again.

Since the update there have not been any small skirmishes. The Deneb Stats page proves it.

It seems like the scores have still been ticking up like there are small skirmishes though. Can anyone on the Serco side confirm they're missing over there as well?

Still looking into it - thanks for the continued reports. A small should be posted the next time one normally would, but it may break again (or another size might- it's bizarre that it seems to favor smalls so far).