The current build of SD8 (8.0.1, 8A36, macOS 11.5.1 Intel) is showing some inconsistent tab lengths when used with fixed-width fonts. A tab character currently appears to take up about 3.3 spaces.
Sample Text (this will render normally on the site):
(* Line indented 4 spaces Line indented with a tab Line indented 3 spaces *)
In preferences, I have tab width set to 4.