What's your font scale (Check if Settings -> Display have it) ?

Do you mean the font size under "web content"? Here is what it says:

Font size: medium
Page zoom: 100%

Changing the font size above does not affect the bad font sizes in the tab title
or other Aura elements.

No, the setting on your linux desktop.

In Settings > Display, I had:

* Scale for menu and title bars: 0.75
* Scale all window contents to match: "display with smallest controls"

I have a two-monitor setup (30" + 24"). It seems that impacted the output. When I changed
"scale all window contents to match" to "display with largest controls" I got back the expected font
size. Same if I changed "scale for menu and title bars" to 1.0.

> * Scale for menu and title bars: 0.75

That's the reason why you get smaller fonts. Even though it says menu/title bars, it changes the gtk's font scale, so it will also make texts in buttons, terminals or even icons (and whatever that uses this value) smaller.

Did you intentionally change this value? Or will 1.0 work for you?

1.0 works fine for me. I don't remember when I set 0.75..

Thanks, closing.

The change just made it to the dev channel. Working via Chrome remote desktop
today, the fonts are definitely too small. Significantly smaller than those
at the top of the Terminal app or Sublime, for example. And in remote desktop
mode, there is no option under Settings > Display to increase font size, for
some reason.

Please include the version number, screenshot and also the output of xpyinfo.

If your Display settings does not have scale, try gnome-teak-tool, Fonts -> Scaling Factor. Make sure you have 1.0 there.

Just checked again, and now it seems ok...closing.