when 2 pieces are put together but not in the correct place, it duplicates the pieces and makes them unmovable

As I connect pieces, the pieces are duplicating themselves. This is in the 60-color-piece mode.

So I can't actually get the game to begin. I get to what looks like a title screen in a sort of hallway with a iphone to one side showing an ad for the main hidden cats games, and I have an active mouse cursor. But nothing on the screen is responsive except for the phone. If I click on that, I get taken to the Steam page to buy the cat games (which I already own). But I can't click on anything else and get a response. Has anyone else encountered this problem? Am I missing something obvious?...

There seems a bug that happens once in a while, when you find 2 pieces that can be connected, but they just don't attach. You have to try several times, picking up the other and match it to your first piece sometimes makes it click together. Is this a known problem? Do other players experience this?...

There's a visual bug that as you place the pieces the image changes into a bugged one, making impossible to complete. London palace 240 black and white is also bugged (this one I completed by placing the pieces out of the "table").