Also, not entirely sure if this constitutes as a bug, or something fixable, but npcs sometimes clog up jumpgates:
Hostile npcs are docking (two starfleas escorting a transport, the time I paid attention).
Whilst the transport's docking one presses the dock key (doubt it makes a difference)
Transport docks & jumps, escorts don't.
Escorts remain in docking procedure (red docking lights flashing), without ever docking. But, since they're first in cue, nobody else can dock either until they're gone.
Typically takes long enough to make me either blow them up or move somewhere else so they disappear. Not sure if it auto-fixes itself or anything, or if it's an actual bug, but just encase.