I've a gas leak, and I can't find where. First I guessed it comes from the owerflow pipe from the carburettor, but the end of the pipe seems dry and clean.
I left the bike with almost full tank yesterday, and in the morning it's almost empty.

Weird thing, it's not dripping constantly, if the engine is running, there is no sign of leakage. When I try to locate the leak, it's not leaking. When I move it around (engine not running) it leaks sometimes.
Do you have any idea, what could be the problem?
Unfortunately, I've got a tip-over two weeks ago (ET4 150 stalls, oil pours from engine. Any idea why? (pic)) but I'm not sure this leak is related, it might have happened once before the tip-over.
Thank you for the help!