Traps are only catching rabbits like every 3 or 4 days. Out of four there will only be one that shows the blue line that you can harvest and it auto reloads a berry in it without actually using one from your inventory. Then the cycle repeats.
#Rabbit Trap
west solstice
marble token
i'm not using traps a lot but today i started a new game and i placed the one for the Lubomir quest and it catched 2 rabbits in one day ... maybe has something to do with the multiple traps?