Flowlab keeps on freezing when I collide with objects

Every time I collide with certain things, the game freezes and stops working. It happens when I touch the gold plant (on the other side of the temple on level one) or when I defeat the monster on level 4)
Here is my game - http://flowlab.io/game/view/1244833

This one very weird but its fixed if you use one collision (in flower)…

Whats even weirder is if you set the collision back to the same set up, it works again

I know, it’s weird right. But what about the dragon
also, the button on my alert won’t show up now

yeah I checked again and the flower works