We have been exploring changes to our default theme that would avoid this, but rolling them out widely is tricky as we need to account for how this may break people’s existing themes. But you can take the Default (full-width) theme for a spin here on meta via the theme switcher to get a sense for where we may be headed.
We will be removing it in the near future, after some final issues with themes are sorted out.
This is helpful feedback - certainly worth us keeping an eye on and evaluating how widespread this kind of issue is for people.