I was referred here from the Sims 4 forum with the eating bug. Original post can be found here:
https://forums.thesims.com/en_us/discussion/914882/sims-still-not-sitting-down#latest
I have played 3 different households after the March patch, and all of them are doing the same thing, they will stand in front of the fridge to eat after grabbing the food, thus preventing other sims from accessing the fridge. The fridge is not at the corner at any of those houses. I took screenshots from the biggest house - please see comments below:
# 1 - This is where the fridge originally located; sim will stand in front of the fridge after getting food.

# 2 - Removed one counter and moved the fridge in between for more space, sim still stands in front of the fridge after grabbing food.

# 3 - Moved fridge to the middle of the kitchen, sim finally walks over to the dining table and sits down to eat.

But then again, I shouldn't have to leave the fridge in the middle of the kitchen for this to work though... Now my only workaround is to direct the sims to sit.