Visible crew/equipment: After Chiana and Jothee lie to Rygel about a pot that exploded which caused the mess, it cuts to the room where Scorpius and his men are holed up while looking at a hologram map of the clinic, and in the first shot facing Grunchlk and Kobrin the boom mic dips into view at the top of the screen.
Continuity mistake: When Aeryn fires D'Argo's Qualta blade at Plonek, it hits the Scarran multiple times on his left side creating a large bloody wound on his chest, and then John shoves the icicle into the right side of Plonek's chest. However, after Plonek pushes John to the ground, in the close-up the icicle is on Plonek's left side with no wound on his right, but when Plonek collapses the icicle is back on his right, and still the bloody wound is gone.
Continuity mistake: After Aeryn uses up D'Argo's Qualta blade on the Scarran who's after John and D'Argo, John grabs a huge icicle and plunges it into Plonek's chest with his right hand, but in the close-up John's using his left hand, then in the next shot the icicle's back in his right hand.
Chosen answer: It's never explained. John mentions a theory that his less technologically developed craft simply interferes with the wormhole less than the "superior" Vipers, but they never make a concrete determination on that point. But we also have to take into account the fact that Moya traverses wormholes with no ill effect as well.
Garlonuss ★