I created a dynamic component for a cabinet consisting of multiple panels. I set it up so the panel thicknesses and relative positions are fixed.
If I use the scaling tool and just click, the cabinet scales correctly. If I use the scaling tool, click, and then type a dimension (e.g. ’ 36" '), the scaling is done without regard to the formula, and the panel thicknesses change. If I then scale again, but just type “1”, Sketchup fixes all of the panel thicknesses.
I believe that this has been documented before, it is a bug, so when scaling put the measure in first before second click. Otherwise do a redraw (right click menu, dynamic components,redraw) you could set a short cut, via the window/ preferences, (provided you have a dynamic component selected) say “w” so that after any scaling you press the w key to assure its redrawn