Amenadiel is wearing his necklace with his part of Azreal's blade which is not possible since Lucifer threw the blade (intact) into the other realm after his mom went in. However when Lucifer used the flaming sword, he put the key in, turned it, then took it out so it wasn't in the hilt of the sword when it was thrown in the other realm.
When Lucifer types on Amandiel's phone to give him access to his social media accounts, he is holding the phone upside down. You can see the charging port and the speakers pointing upwards.
When Lieutenant Pierce walk with Decker at night, Pierce pulls out his phone and turns it upside down before using it.
When Chloe shows up to the scene of the body, it can be seen that the water in the trough is red from blood. Yet Chloe asks Ella if the victim drowned. She should easily be able to see the red water, as she's standing right next to the trough when she asks.