Rocks'n'Diamonds

I just played Venatirs 5 levels and found a strange behaviour:
If you push the last Sokoban object into the last empty field, the closed exit will open. But if you push the Sokoban object then one step further, so that there's an empty field, the exit won't close, it stays open.
Is that a bug or intended behaviour?
(RnD 3.2.3-0)

It should be the correct behaviour. You have solved the "Sokoban part" of the level, and the exit opens up for you to pass - why should it close again?

By the way, "Sokoban field w/object" elements and "Light up switchable lamp" elements can be safely destroyed, at any time.

There's no exit in original Sokoban anyway...

> It should be the correct behaviour. You have solved the "Sokoban part" of
> the level, and the exit opens up for you to pass - why should it close
> again?

Besides bojster's point, this is indeed the main reason for this behaviour.

In my opinion it looks somewhat incomplete when not all bulbs are glowing, but ok, you're the boss.