I'm already updating the game right now for more content / bug fixes.
The first bug is because I had to block Ray casts from UI. I tried to fix that with better placement of the Tutorial Text.
For the second Bug that was mainly because if you use a fish it gets grilled over the fire you could theoretically even see it, but there isn't enough of a indicator to be actually able to see it. That's also the reason why you wait before the hunger gets restored (The fish gets roasted first). I can totally understand how that led to confusion. I'll try to implement some clear smoke particles that will clearly signalise the grilling of the fish.
Thanks for you nice and helpful feedback. :D