When I open my inventory while having the Gear option in my action menu I open the dialog to access the vehicles inventory in my crosshair/cursortarget. But when I turn away or lose the focus of exactly this object/vehicle because of the sitdown animation the dialog will automatically close as soon as I click in it. This will obviously start shooting if I have a weapon equipped.
Just had this happen with a mission lootcrate. Geared it, made the sitdown animation, lost focus and when I click I destroyed it with a few shots from my Mk Mod

Same problem in our base with the badly damaged vehicles. One misfire in the wrong direction and I can see my base burn...
Is this a bug? Any explanation for this behaviour? (To avoid accessing locked vehicles?)