Corrected entry: When Andy and Barney first go out the back door of the jail house, there is a field and a grain & feed company outside the door. You can just barely see the grain & feed store. The next time they go out the back door, you can see all the grain store, however no field at all.
Corrected entry: When Andy arrives back to the courthouse, just prior to Barney showing Andy that Gomer has been chosen as a second deputy, Andy gets out of the car and walks briskly to the courthouse. Right up until the time Andy reaches the courthouse his pant legs are tucked into his boots. The next shot is an inside the courthouse shot showing Andy walking in. His pant legs are nice and pressed and not tucked in.
Correction: Andy never "tucks" his pant legs into his boots. Due to the style of the boots - his pant legs occasionally get caught in the boot. However, just due to walking or stretching the leg - the pant leg becomes un-caught easily. So, it could looked tucked in one instant and untucked the next.
Correction: The second scene is from a different angle. It blocks out the field.