Episode #4.3 - S4-E4
Revealing mistake: When Janice is speaking to Johnny by the pool, it is pouring down with rain. Look at all the parasols/walls etc in the background and you can see the sun shining on everything. The rain is artificial rain.
Episode #4.3 - S4-E4
Continuity mistake: At the end of the scene where Pauline is talking to Michael at the bar, Pauline puts an empty glass on the bar and says "keep them coming". Mateo picks the glass up, and puts it under the bar. In the next shot, the glass appears back on the bar side.