[Bug] Heroes may equip one more item World Event not working

World events... awesome!  The above event popped up and I said yes!  I've got four things i want to equip on my sov and and my hero.  

But i couldn't equip more than 3.  I tried unequipping all misc items and starting again, still no good.  Tried trading between them, nope.  I did not stop playing and try a restart as I was having a lot of fun anyway.

As an aside, shouldn't the magic weight reducing backpack count as a +1 slot for misc stuff as well as a weight reducer?  Or could we have other items that give +1-+3 item slots?  That would be fun.

Thanks, and good job!