Connie's ankle monitor changes from her right ankle when attached at the police station to her left ankle when Dale later asks her if she wants to go get liquor at his house.
It is impossible for water to spray up like a fountain out of the drain of a toilet bowl. It is a drain and there is no pressurized water connection to it.
Sheldon does his customary triple knock when knocking on MeMaw's door. It is revealed in The Big Bang Theory (2007) that he developed this knock after not knocking and finding his father in bed with another women at the age of 13. It might seem that this has not happened yet on Young Sheldon. However, it has, earlier this season. The incident in question was actually with Mary, but disguised as a German tourist without Sheldon realizing, in Ants on a Log and a Cheating Winker (2024). The writers have simply neglected to adjust Sheldon's behavior accordingly to show him being traumatized by this event.
Given the size of Medford it seems strange that they would be using a septic tank instead of connected to a city sewer system.