BBEdit 11.6.7 contains fixes for reported issues, as well as refinements to new features that were added in BBEdit 11.6.

Always browsing through the release notes.

When running on 10.13, the application no longer attempts to use the built-in "Consolas for BBEdit" font, because the OS won't load it and instead defaults to some proportional monstrosity. (If you are finding that this happens anyway, go to the "Editor Defaults" preferences and use the "Restore Defaults" button.)

32-bit compatibility: Since Apple has explicitly stated that macOS High Sierra will run 32-bit applications, there is no immediate compatibility concern. We do plan to release a 64-bit version of BBEdit, which we expect to have ready well before OS support becomes an issue.