When using batteries for NVG (likely other items, too) the UI does not show the battery losing charge. This leads to many situations where NVGs turn off unexpectedly. Removing the battery, and putting them back seems to fix this, but it’s pretty annoying.

I haven’t had a chance to test whether this is an issue in the latest expy build, but someone was recently complaining in the forums about NVGs turning off at full charge. This reminded me of the issue, which was very prevalent in 1.05.