Oxygen refil from back of tank is bugged. Not always, but many times when I fill my Oxygen from the back of the tank, I watch the text until it says 100% and the voice says Oxygen filled, (side bug, it also says water filler when water is not filled). When I open my inventory after, my oxygen still shows less than 100%. I have to go around to the front panel and take my oxygen bottle off to fill it properly. Yet a few times, it actually fills like it says it does and I don't need to fill it from the front panel. So, if I do not double check the actual level in my inventory, I can end up running out of oxygen soon after filling because it really did not fill.
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