In Season 2, when Tom Arnold's Arnie is first introduced, Roseanne and Jackie act like this is a relative newcomer to the community. Roseanne even asks Jackie if she knows the guy in the kitchen with the plaid shirt. In this episode, it's apparent he grew up with the gang. When Jackie reveals to the girls that she slept with Arnie, Roseanne says that they had a pact in high school that they wouldn't let him breed. And for some reason it is suggested that Bonnie was in high school with them too. Bonnie was too old for that to be believed.
In the opening scene, the wall behind the stove and counter is flat up against them, directly behind and touching. During the poker scene later on, the wall behind the stove and counter has been moved back out into it's usual position, leaving about a four foot gap behind the stove and counter.
In the opening scene with DJ and the dog, you can see the bag of dog food on the floor just outside the kitchen door on the back porch. It disappears when DJ leaves to go fetch the bag.