Island of the Giant Pokemon - S1-E17
Other mistake: When Ash wakes up on the beach, part of the sides of the hat overlaps the front. (00:01:53)
Continuity mistake: When Team Rocket begins reciting their motto, Jessie's gloves disappear. (00:06:42)
Continuity mistake: When Ash and his friends recall their Pokémon during their battle with Team Rocket, Ash's left glove disappears. (00:07:58)
Continuity mistake: When Ash and his friends escape the ship, Ash's gloves disappear. (00:12:44)
Continuity mistake: When Ash and his friends paddle away from Gyarados, the tips on Meowth's feet disappear. (00:18:52)
Continuity mistake: When Jessie tells Ekans to use Acid, the stripe on its tail disappears. (00:04:45)
Continuity mistake: When Meowth says that Jessie and James picked a bad place for their nap, the black edge of his ears turns cream. (00:04:04)
Battle Aboard the St. Anne - S1-E15
Continuity mistake: When Jessie insults James for getting tricked by the salesman, she appears in her regular clothes, instead of her disguise. (00:12:12)
Battle Aboard the St. Anne - S1-E15
Continuity mistake: When Ash is impressed on seeing the inside of the cruise, his bag disappears. (00:05:57)
Mystery at the Lighthouse - S1-E13
Continuity mistake: During the motto, James' purple belt turns white in one shot, and shortly after, Meowth's cream forepaws turn orange. (00:11:38)
Mystery at the Lighthouse - S1-E13
Continuity mistake: When Misty says that the lighthouse will probably have extra beds, her suspenders disappear, while the purple strap on her bag turns red like them. (00:06:49)
Mystery at the Lighthouse - S1-E13
Continuity mistake: After Krabby's Poké Ball disappears, the white stripe on Ash's bag turns orange. (00:05:05)
The Path to the Pokemon League - S1-E8
Continuity mistake: When Team Rocket is sneaking around the Gym while inside a ball, Meowth's cream forepaws turn orange. (00:12:44)
The Path to the Pokemon League - S1-E8
Character mistake: In the English dub, when Ash says that Sandshrew are weakened by water, he incorrectly refers to them as "Sandshrews." The plural of a Pokémon is the same as the singular. (00:09:05)
The Path to the Pokemon League - S1-E8
Revealing mistake: When Ash and his friends turn to A.J., Ash's left hand passes through Brock. (00:03:00)
The Water Flowers of Cerulean City - S1-E7
Character mistake: Lily and Daisy say that Misty wants to become a Pokémon Trainer. However, she is already a Pokémon Trainer. Her true goal is to become a Water-type Pokémon Master. (00:11:30)
The Water Flowers of Cerulean City - S1-E7
Audio problem: When Misty jumps from the stands, she speaks, but her mouth does not move. (00:10:40)
The Water Flowers of Cerulean City - S1-E7
Audio problem: When Ash tells Brock to follow him, his mouth does not move. (00:02:43)
Showdown in Pewter City - S1-E5
Continuity mistake: When Flint tells Ash to come with him, Ash's gloves disappear. (00:08:15)
Showdown in Pewter City - S1-E5
Continuity mistake: When Team Rocket is wondering where the trap is, Jessie's right glove changes from black to skin-colour. (00:01:46)
Answer: Yes it ran away because Layla hurt its feelings.