Hi Ken, here's a quote from Jack on another thread (https://igpmanager.com/forum-thread/7820), the head developer for iGP.
Jack
My apologies, but this may be how this season has to run (just this one). There was a problem with the code that reset seasons and it existed for around 24 hours. It was significant enough to stop some leagues from having a new season at all. It's fixed now, so won't happen again for all future seasons.
As I was repairing this manually and resetting seasons by hand, it clearly reset the season twice in your league, resulting in a 'double design reset', initially to your next season designs, then to the next-next season designs which wouldn't have been generated yet, resulting in 1 for all attributes. At this point the only relief I can offer is that it should be the same for everyone in these leagues and will only be for this season.