Characters in the Unicode font have uneven gaps between them

Short description of the issue

Characters rendered from unihex providers have uneven gaps following the character:

• Characters with odd number width have 1px gap

• Characters with even number width have 2px gap

Steps to reproduce the issue

Turn on "Force Unicode Font" or view any language that uses Unifont (which uses unihex providers).

From the attached images, you can see there are 1px gaps after f, i, l, m, t, while others have 2px.

Expected result

Gaps between characters have the same 1px width (or even 2px is fine) consistently.

Actual result

Gaps between characters have different widths based on the width of the character glyph