The height of the dark theme toggle creates excess vertical space in the navigation banner at the top of users’ profile pages:
The problem is more obvious scrolled down the page a bit, where the account name is misaligned with the navigation links as a result of the height change:
Compare this to a screenshot at the same width, except with the toggle removed and the
hx_UnderlineNav-with-profile-color-modes-banner class omitted. The banner height is much more appropriate for the content:
This could possibly be resolved with a max-height set on the toggle image, or a negative vertical margin.