Fishing mechanics slightly changed after last update

Hi fellas,

I did a bit of fishing and I noticed that there seems to be NO chance to catch something within the first 2 seconds of the channeling, while that was very possible before (on both Lordaeron itself and other realms); sometimes you'd almost instantly catch something, which was quite satisfying.

I feel this change took effect after the last update, although I haven't noticed any reference to fishing in the changelog.

My memory fails me: what's the blizz-like, intended behaviour for fishing?