A Priest Walks Into a Bar - S1-E9
Continuity mistake: When Lucifer goes to speak to the priest on the balcony after finding out about Connor Lucifer has his right arm by his side as he walks out. When the shot changes to outside his right arm is bent at the elbow and in front of him. (00:28:30)
A Priest Walks Into a Bar - S1-E9
Continuity mistake: When talking to the priest in Lux, Lucifer's hands are constantly changing positions between cuts. (00:24:20)
Continuity mistake: When Malcolm lifts his jacket to show he is unarmed his jacket position changes between the two shots. In the first shot his jacket is hanging low and in the second it's held high. (00:19:40)
Favorite Son - S1-E6
Continuity mistake: The way Trixie grabs the chocolate cake differs from raising her hand up to Dan and just holding it out in another shot. (00:37:20)
Favorite Son - S1-E6
Continuity mistake: When Dan hands Trixie the chocolate cake, he holds it with 1 hand then two depending on the camera angles. (00:37:20)
Favorite Son - S1-E6
Revealing mistake: When Lucifer takes off in Chloe's car during the stakeout, tyre marks are visible in the gravel from previous takes. (00:32:10)
Favorite Son - S1-E6
Continuity mistake: When Lucifer is about to leave Linda's office she stops him and raises her hand in front of her chest. When the shot changes, her hands are not visible even though they should be. (00:17:40)
Favorite Son - S1-E6
Continuity mistake: When Lucifer meets with Chloe for the first time, Chloe has her arms by her side in one shot and on her hips in the next. (00:06:50)
Sweet Kicks - S1-E5
Continuity mistake: At the end, Lucifer throws Benny through the painting and you can see he's not in the painting itself, he's gone right through. When the shot changes however, Benny is back in the middle of the picture. (00:36:40)
Sweet Kicks - S1-E5
Character mistake: Benny tells Lucifer he's an ex-marine. I beleive it's the case that US Marines never refer to themselves as an ex-marine, with the quote often used as being "once a marine, always a marine" (00:09:20)
Suggested correction: First off, it was Hector who said he was an ex-Marine, not Benny. But just because someone goes against the cultural norm doesn't make it a mistake. There are a lot of Marines who refer to themselves as former or ex - Marines for various reasons.
Continuity mistake: When Lucifer tells Carver that "This woman [Chloe] won't have sex with me!" Chloe's reaction changes from the close to long shots. Note her mouth. (00:14:50)
Continuity mistake: At the end of the kitchen scene, Dan turns to tell Chloe he is disappointed in her. When he does this, in the shot from behind Chloe looking at Dan, Chloe has her hand on the door frame at head height and is leaning against her hand. When the shot changes to behind Dan looking at Chloe her hand and head have moved instantly with no time to do so. (00:04:00)
Continuity mistake: When Chloe is kicking Lucifer out of the kitchen at the start she has her hands on her hips in one shot and down by her sides in the next. When Lucifer finally admits defeat and says "Fine" (00:04:00)
The Would-Be Prince of Darkness - S1-E3
Continuity mistake: As Lucifer is leaving Linda's office, she has hold of her shoe up by her chest. When the shot changes it's now in her lap. (00:40:05)
The Would-Be Prince of Darkness - S1-E3
Continuity mistake: Lucifer looks at the file of Ty's ex and isn't holding the file in one shot but is in the subsequent shot. (00:21:00)
The Would-Be Prince of Darkness - S1-E3
Continuity mistake: Ty's agent places the folder down for Lucifer and Decker to look at. The position of the folders changes in subsequent shots. (00:20:50)
A Chance At a Happy Ending - S5-E16
Other mistake: After Amenadiel's necklace pin is removed, Chloe tells lucifer to get the blade, and he picks it up with the hilt still attached. But we saw in an earlier season that without that pin to hold it all together, the hilt just falls off.