Chris says that in the future he goes to Paige for money, but in _"Charmed" Oh My Goddess: Part 1 (2003)_he states that where he comes from history shows Paige died that day, meaning she died long before he was born, so there was no way he could ask her for money in the future.
Chris hands Paige the vanquishing potion for her to bless but immediately after he is gesturing with his hand you can see the potion bottle still in it. Then during the fight scene Phoebe throws a clearly blue potion which Chris catches before attacking Phoebe and Paige, but when Phoebe knocks it out of his hand and it comes to rest by Paige's hand on the floor it is yellow. When Paige gets up with the potion it is once again blue. The potion is then yellow again when Piper drinks it.
When Phoebe leaves Ron and goes to the bar to tell Paige the bar is hopping, Paige reaches down for what can be assumed as a drink for Phoebe. In the next shot, the drink is already there with a straw and you never see Paige get back up.
After Piper is freed from the web, while Chris and Leo are in the cave, Piper's cocoon can be seen hanging from the back wall, fully intact.
After Piper is spun into a web by the spider demon, she no longer has a baby bump.
When the ogre drops the rock he's been throwing at the demons spider web, you can clearly see it's made of foam, it bounces on the ground.
Before freeing Paige from the webs on the staircase, Riley warns her that the luck could go either way, despite it previously being shown that the leprechaun can control whether the luck they give is good or bad based on which incantation they use.
When Paige is stuck to the staircase, her arms are only stuck up to her forearms, therefore she should be dangling in the air. She instead has her arms bent at the elbow.
When Paige is imprisoned on the stairway with the web that Chris shot at her, you can see she is in fact sitting on a piece of wood and that her feet are resting on two wedges of wood.