Hello and thanks for the comment! Title update 5 (the current update I am working on) fixes the bug you mentioned. As for the oxygen, I have experimented with adding air vents that can ventilate enclosed areas, but I don't think I can perfect it in time for Title update 5, but I have added a way to increase suit oxygen storage. Also so far there will be two door types to expect from the new update, along with electric systems to automate said doors.