Bug at chapter 4?

[Karel]

You need to restart the whole level and play the level as it was intended. When you start the level and gas barrels explode, go back to the starting room and pull the lever. Once the gas is gone, open the doors and continue.

Problem is that you run through the gased area without going back to the starting room, which causes gas mask to stop working, later in the level.

Or you can wait for the patch..

[major]

Ok I try...thanks !!!!