Did you confirm that your copy of this font has has glyphs for the 010Bxx range ?

• https://en.wikibooks.org/wiki/Unicode/Character_reference/10000-10FFF

You can check in the Rules tab in the right panel in the Inspector what font-family is used for selected text. You can check in the Fonts tab in the right panel in the Inspector what font is actually used because Firefox might be using a different font than specified by the website. If the Fonts tab is hidden, click the Down arrow at the right end.

• https://firefox-source-docs.mozilla.org/devtools-user/page_inspector/how_to/edit_fonts/

Did you confirm that your copy of this font has has glyphs for the 010Bxx range ?

• https://en.wikibooks.org/wiki/Unicode/Character_reference/10000-10FFF

You can check in the Rules tab in the right panel in the Inspector what font-family is used for selected text. You can check in the Fonts tab in the right panel in the Inspector what font is actually used because Firefox might be using a different font than specified by the website. If the Fonts tab is hidden, click the Down arrow at the right end.

• https://firefox-source-docs.mozilla.org/devtools-user/page_inspector/how_to/edit_fonts/

My font is in the correct Unicode range and the it displays correctly in inspector and in tabs but on web pages its just being displayed in Arial.