When picking up explosives or mines via right mouse klick, the first one disapears - however it adds weight to the characters total weight bar.
If one tries to pick up additional items of the same type, rightklicking works fine. Also drag and drop works fine.
Items affected are:
AT-Mine
APERS Mine
APERS Bounding Mine
APERS Tripwire Mine
Claymore
Explosive Charge
Explosive Satchel