Icons are narrowed in mintty

[sankl]

Hi, if I use the plugin in mintty the characters get narrowed after applying palette:

This may be related to the following issue: mintty/mintty#1104
I'm not sure if it is 100% correct way, but if I apply following update to function! s:apply():

@@ -43,7 +43,7 @@ function! s:apply() abort
   endif
   let w:glyph_palette_matches = map(
         \ copy(b:glyph_palette_palette),
-        \ { -> matchadd(v:key, v:val) },
+        \ { -> matchadd(v:key, v:val.' ') },
         \)
endfunction

the issue gets fixed:

Thank you!

[lambdalisue]

It's a bit hard for me to test on mintty so help wanted.