I have the same problem with the new 0.55, tried to prepare fish with a cleaver and a stone knife, no fillets, just a pile of guts.

I saw that dev could not reproduce the bug, but you are right, the bug is here.

I fished with a bone crafted fish hook, created in 0.54 version. The fish rod was created in 0.54 too, I dont know if it s important.

Same problem, I reported it too, with a video that I link again here in this post, u ll understand what happened to u : https://www.youtube.com/watch?v=Fye1xXhrI_Y&feature=youtu.be

At 1min 07, with full screen, u can see the cheater, he comes like the light, take all and disappear in the same second.