When a font is set for the "default" face in the init.el file.
For example, like this:
(set-face-attribute 'default nil
:font "Fira Code"
:weight 'regular
:height 170)
This messes up the font selection for various latin and all ipa characters.
Despite the configured font supporting the characters which are typed, Emacs selects a different font for them, this results in visually jarring text or sometimes failed composition.
For example see in 1.png
All of the letters except ṇ (#x1E47) are in Fira Code while it is in Latin Modern Mono despite Fira Code supporting it.
Below it t̪ (t + #x32A) is not composed properly because while 't' is in FiraCode #x32A is in Step Regular.
Note: This does not happen with emacs -Q
Thanks
1.png