is there a way to clean up countertop common edges? can't join them, can't change the linework unless you want to change the entire outline of the countertop to what you want and then pick the remaining edges with a detail line.
FYI...if you are using the OOTB countertop...the 3D element is set to not be visible in plan. What you are seeing is a masking region with a symbolic line for the backsplash. This is also why you cannot host sinks with voids in it from a plan view.
