I believe what you see is the result of new sprites being created every tick on top of each other and playing the animation with a phase difference of one tick (so you see all the frames overlaying).
You can confirm that easily with the debugger, just see the number of objects, it should increase rapidly over time.
This is happening because when the condition '"is Group "mole1" active" becomes true, it stays true, thus performing the same actions over and over again.
Add a "system | Trigger once while true" condition below the "is Group "mole1" active" condition, to make sure that you create only one "Mole9" object.