Mac OS 10.13.6 AI 23.1.1
See att screenshot. I converted this type to outlines, then Expanded Appearance, then Expanded stroke and fill. Results are superimposed over the original red/orange type. You can that the converted outline does not match the type; in general the top is pushed rightward and the bottom leftward. I tried skewing the outline to correct it but while that may nudge some curves and vertices back to where they belong, it pushes others out. The only solution I know is to tweak and/or redraw the path, which is an extremely time-consuming task. It appears that this problem arises with some but not all fonts.