"How did you know about the Old version , and it seems like you prefer the old version ?"
I played the original version a good couple of years ago - though reading the 6-7 years old comments about the game not working properly made me somewhat unsure about where and how I exactly did that (perhaps on GameJolt). I don't have anything against the new version, by the way, except perhaps I liked the graphics in the old one slightly more(?) The way the new birds have colors similar to the command fields is a little bit confusing for now, but perhaps you have some plans with that.
"Player not supposed to change boxes states after bird starts walking . but Would explore the idea of giving that option."
Definitely do so. While the bug made some puzzles much easier (not necessarily a problem, in my opinion), I think it's interesting and exciting how a player can combine planning with real time actions.
By the way, to me (as a fellow developer) it's pretty cool to see how you're still interested in this game concept after all these years. I hope you can find some ways to expand it into exciting directions. Can't wait till the next update!