Has anyone else had the issue of after you defeat the lady of the lake and get to Laurens house, you can't move past the part of her telling you to put the heart into the stabelizer while the stabelizer says that it is already there. The heart is not in the inventory either and there is no way to move past this point?

edit: I've retried the whole game about four times and I figured that the heart goes when I get back from the deep/ lady of the lake area? (can't remeber name) when the old level loads, the shards re-set and your back to the same state as you were when you start the whole stages.

I have the exact same problem

Yeah, it removes itself from the inventory the second you go back to Deep Town. So right now, the HTML5 version is impossible.

Ive had this happen to me too, so ive retried and figured out that i have to talk to Lauren first before putting the heart into the stablizer. and then I could finally move on.