Continuity mistake: After the first encounter with the zombie Geonosians, it's shown there are four clone troopers in the group when they retreat. When Obi-Wan orders two of the clones to try and head back to the surface to get reinforcements, there are suddenly several more clones present. (00:11:32)
Senate Spy - S2-E4
Continuity mistake: When Padmé accesses the holo-table with the droid factory plans, she puts her clutch purse on the edge of the table. After she guesses the correct password, the purse is absent from a shot facing her as the hologram activates, but present in the next shot. (00:15:56)
Continuity mistake: When Obi-Wan and Mace retrieve the stolen holocron at Black Stall Station, the device is shown as completely closed and back in a cube configuration. This is despite the fact that the previous episodes of the arc established that Jedi holocrons can only be opened by Jedi, and it was last seen partially opened after Bane inserted the data crystal, with no contact with any Jedi between Bane's escape and the arrival at his hideout. (00:15:08)
Continuity mistake: When Commander Ponds is first seen, running between the AT-TEs travelling along the canyon wall, his kama (kilt) is missing in the second shot of him before reappearing in the next one. (00:01:22)
Continuity mistake: When the three Jedi Cruisers are shown after a vulture droid crashes into the Resolute's bridge, the one on the left, the Defender, has had one of its two bridges destroyed. After a cut to a different shot, the next shot of the three ships as they turn to retreat has the Defender with both bridges intact. (00:06:28)
Continuity mistake: During Dooku's conversation with Sidious, he's wearing his cape. When Dooku stands up as Ventress enters the room afterwards, his cape has abruptly disappeared.
Continuity mistake: Ahsoka escapes from General Grievous by cutting his right hand off. When Grievous jumps into his starfighter, he suddenly has his hand back. (00:18:11)
Continuity mistake: When Ahsoka asks R3-S6 how the droid's first adventure was and Anakin snaps that he thinks he's lucky to be alive, Anakin's clothes below his belt are missing the black overtunic, leaving only the red tunic below it. (00:20:17)
Continuity mistake: When Rex starts giving the rookies a pep talk, as well as in the shot afterwards where all the clones grab their helmets, Echo's helmet is missing the binocular attachment. (00:16:28)
Continuity mistake: Tup attracts Krell's attention by firing two shots at him, but Krell is then seen deflecting three blaster bolts. (00:15:41)
Continuity mistake: When Rex releases Fives and Jesse from the brig, Fives' kama is missing as he stands up. (00:11:00)
Continuity mistake: When Rex begins to question Krell in the brig, Fives' kama is missing. (00:16:55)
Continuity mistake: While Anakin and Obi-Wan are talking about Rush Clovis, a droid head Anakin is working on disappears from a table between shots. (00:07:30)
Continuity mistake: When Anakin and Padmé are walking towards her ship while discussing the situation, as happens with surprising frequency, Rex, walking behind them, is missing his kama (the kilt). (00:04:35)
Continuity mistake: When Baron Papanoida walks into Jabba's court, his half-cape is missing. (00:10:24)
Continuity mistake: The canopies of Anakin and Mace's starfighters appear different than they did in the previous episode, now possessing an opaque rim around the outside.
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)
Continuity mistake: When Satine is falsely identified as a suspect in a shooting, she pulls her hand with her holdout pistol under her cloak, but when two police droids approach, her hand is back out again. (00:11:23)
Continuity mistake: When Anakin is facing down one of the assassin droids, after it throws Redeye's body at him, he and the droid are suddenly in a different part of the cargo hold, with fewer crates around them. (00:09:04)
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.