Death Trap - S2-E20
Continuity mistake: When Commander Ponds orders some other clone troopers to evacuate because he's staying onboard with the Admiral, his kama (kilt) is missing, and his blaster pistols are missing from his holsters. (00:16:46)
Death Trap - S2-E20
Continuity mistake: When the alarm goes off, Sergeant Crasher tells his cadets that there's been an explosion and that they'll show the crew how the Clone Youth Brigade does things. As he's saying this, the camera cuts from him to a closeup of Hotshot before back to Crasher, who is walking through the same group of cadets in the exact same way in both shots. (00:10:36)
Answer: I guess that 1) the King assumed that Ventress' droids were meant to capture the Jedi, not kill him outright. When she yells at OOM-224 to shoot Yoda, she evidently failed that expectation. 2) Sending out a bunch of Droidekas after it is plain that Master Yoda has clearly won is not a sign of good sportsmanship, either.