You may have a font installed that identifies itself as an Helvetica font that is actually Helvetica Condensed.

You can right-click and select "Inspect Element" to open the builtin Inspector with this element selected.

• https://developer.mozilla.org/en-US/docs/Tools/Page_Inspector/How_to/Examine_and_edit_HTML

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 Font 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.

• https://developer.mozilla.org/en-US/docs/Tools/Page_Inspector/How_to/Edit_fonts

You're not understanding my problem correctly... The text spacing should not be displayed so tight/squished

The point is that your Firefox appears to be using a condensed font for some reason because there is no regular font found for this font-family, so you either need to remove this condensed font or install all variants (or at least the regular variant).

With the steps I posted above you should be able to check what font-family rules are present and what font is used by Firefox.

Dear Cor-el,

Did you see my screenshots? It's not a font problem. Whatever font i changed to with stylus, the text spacing problem is still there. I've now noticed this problem on other site's comment section. It is definitely another font.

edit for clarity: Prior to FF89, the text-spacing is rendered correctly. I did not install new font or replace any font. There was no Windows update or whatsoever. After FF update to 89, this problem showed up.

edit2: In addition to my screenshot above of Edge showing the correct text-spacing, I've now downloaded Chrome to test, and no guessing needed. Chrome displayed them correctly. Chrome screenshot added if you still doubt me.