I have Home Designer Pro 2023 and have been working on my house plans for several months. I recently finalized my plan and have been working on details which has had me working in the program more in depth. I recently discovered that my drywall does not display in plan view on either interior or the inside of exterior walls. The color of all my drywall had changed also so I know I accidentally changed something. In the plan view all the trim is spaced like the drywall is there. In 3d view it is
And that's probably your problem.
This is from Chief Premier, so it might look a bit different, but try setting your display options like this.