
Okido Laboratory! All Members Assemble! - S8-E41
Revealing mistake: When Professor Birch says that Muk should play with the other Pokémon, his mouth briefly detaches from his face. (00:06:23)

Continuity mistake: When Ash approaches the bumpers, his bag disappears. This also happens before he points out that the Machoke and Machamp are the same. (00:09:38 - 00:11:16)

Continuity mistake: When Ash and his friends leave, the stripe on Ash's bag changes from being above the circle to below it. (00:20:50)

Continuity mistake: When Emily says that this is the third time Psyduck ran away, May's gloves disappear. (00:13:18)

Continuity mistake: When Meowth is keeping the net closed, Psyduck's cream-coloured feet turn white. In the same shot, Jessie speaks, but her mouth does not move. (00:10:43)

Continuity mistake: When the camera zooms out on Ash and his friends sliding down the hill, May's gloves turn completely blue. (00:09:14)

Continuity mistake: When Ash tells Phanpy to use Defense Curl, his glove disappears while his right sleeve changes from black to blue. (00:03:10)

Continuity mistake: After Ash and his friends say that three against one is unfair, Machoke's black briefs turn blue like its skin. This also happens when it uses Cross Chop. (00:02:36 - 00:11:58)

Continuity mistake: When Scott says that a direct hit is needed for Water Pulse to be effective, the pattern on May's bandanna changes from white with a red lining to red with a white lining. (00:12:50)

Continuity mistake: When Noland tells Articuno to finish the battle with Steel Wing, his glove disappears. (00:16:52)

Start the Preliminaries! Masamune Appears!! - S8-E34
Continuity mistake: When Tyson is tending to his Meowth's wounds during the flashback, the tips on the Meowth's feet briefly disappear. (00:17:35)

The Scuffle of Legends - S8-E6
Continuity mistake: In the second shot of Groudon wading in the water, the tips on Pikachu's ears disappear. (00:14:18)

The Scuffle of Legends - S8-E6
Continuity mistake: When Lance meets up with Ash's friends, the gloves on his disguise disappear. (00:06:39)

Continuity mistake: When Lance describes his mission to Ash, the glove on his disguise disappears. (00:16:37)

Continuity mistake: When Shelly says that Lance is not a Team Magma member, the gloves on her disguise disappear. (00:08:27)

Continuity mistake: When May and Max look at Lance's Gyarados, its red whiskers turn cream-coloured. (00:13:38)

Muscle Battle!? Double Battle!! - S8-E4
Continuity mistake: When Brock says that the workout makes sense, the brown lining on his sleeve turns orange. (00:08:20)

Huntail and Sakurabyss! The Riddle of Evolution! - S8-E3
Continuity mistake: When Ash says that they saw the kids in the water, the pink collar on Nurse Joy's dress turns white. (00:05:26)
Huntail and Sakurabyss! The Riddle of Evolution! - S8-E3
Character mistake: The Pokédex entry for Huntail says that it is the evolved form of Clamperl, when it should be an evolved form of Clamperl. This also happens with Gorebyss' entry. (00:02:03)

Continuity mistake: When Max says that Spoink's pearl fell into the ocean, the black straps on Brock's bag turn blue like the rest of the bag. (00:05:17)
Answer: Yes it ran away because Layla hurt its feelings.