Nice looking garden and a good looking berry crop.
As to the beans being stunted, I'd add a little fertilizer to that row. I use 7 oz/20 ft of row of 13-13-13 fertilizer for beans, tilled in before planting. That equates to a low rate of 40# actual N per acre. Although people say they are legumes and produce their own N, they really don't produce enough for optimum growth. Commercially, beans ate fertilized with up to 80# N/Acre. May not have triple 13 available, but some 10-10-10 or 12-12-12 will do the same.
If you've got a broad area that was affected by the oak, using some of the triple 13 or similar fertilizer will bring it back quickly.