I'm using Iconic One Pro theme with Ubuntu as default font, it appears on the site, blog post, everything.

But the wordpress editor is not using the same font (default Noto Sans) on Chrome and Edge.

On Firefox, the editor is using Ubuntu as default font.

I've tried many methods including importing font on function.php / editor.css, etc.

The iop-block-editor-style.css is already importing Ubuntu font for the editor, but for some reason it doesn't work except on Firefox.

And one more problem is that on Firefox, the font changed back to Times New Roman on "list" block.

Can someone help me out? Big thanks!