Platform, device version and operating system:
PC/Mobile
What you were expecting to happen, and what actually happened:
I was expecting to get deeds and books from Campaign Tasks that match in color those handed out by the Campaign Pass. The Campaign Pass is on a color rotation, currently brown. The Campaign Tasks seem to be stuck on red. This is especially annoying because recent changes locked F2P players out of books from the Campaign Pass, only receiving red books means most kingdoms can no longer be developed properly.
How often does this happen? When did it begin happening?
Ever since the campaign format got changed a couple of months ago.
and 1 extra 
kingdom, so I think that it honestly will work itself out in the end, but that’s a long road most players don’t want to travel. It would be a great QOL improvement for us to just select the color books that we want from the PvP shop and campaign rewards, but I know that is never going to happen.