Old goals coming back up

[GeorgiaXYZ]

It's beyond annoying when every goal I've ever done starts popping back up. saying time has run out, and wouldn't I like to waste all my gems doing them again. I have several times, indeed, wasted them because the things pop up suddenly, so you can hit them before you know they are coming, and then after a while they stop so you think they are done, until you try to do something else and then they start again. So I never had many gems! And then to add to the frustration, tonight when I was spending so long trying to get rid of them all, my dishes were spoiling before I could finish!

Why does this happen, and is there no way to stop it? I haven't tried in RS to find that one mission I didn't finish, but in FS Thanksgiving, where there don't seem to be any more missions, it doesn't give me the chance to do the one I didn't finish, just all the ones I did!