THE UNEXPECTED RESULT: The text size in the forums of AVSFORUM is different based on the setting of layout.css.servo.enabled. (I noticed it on other sites, but for the sites I visit it is most dramatic on AVSFORUM.) EXPECTED RESULTS: I would expect no difference in appearance between layout.css.servo.enabled being set to True vs. False. TO REPRODUCE (starting with a brand new profile): 1. Using Nightly, create a new profile (I called mine Test_Nightly_New) 2. Shut down Nightly, launch Nightly using the new profile. 3. Navigate to http://www.avsforum.com/forum/286-latest-industry-news/ 4. Open a tab and go into about:config, and set layout.css.servo.enabled to True. (For these steps, leave this about:config tab open) 5. Open a new tab, and again navigate to http://www.avsforum.com/forum/286-latest-industry-news/ 6. Notice that the threads listed under the heading "Thread / Thread Starter" appear to be the same font and size between the first tab (step 3) and the third tab (step 5). 7.Go into the menu -> Options, "General" on the sidebar, and scroll down to the "Language and Appearance" section. In "Fonts & Colors" section, on the "Default font" line, at the right, click on the "Advanced" tab. 8. Change the minimum font size to 14, then click on "Ok" at the bottom of the pop-up panel. 9. Observe that now the first tab (built with layout.css.servo.enabled=False) has a much larger font for the thread list than the third tab (built with layout.css.servo.enabled=True). 10. Change the minimum font size to something huge, like 20. 11. Observe that the minimum font size is indeed being interpreted on the third tab with layout.css.servo.enabled=True because now the text is indeed larger, but that the font size on the first tab (layout.css.servo.enabled=False) is very much larger. MY PREFERENCE: Personally, I prefer how layout.css.servo.enabled=True (and it certainly better matches my expectations), but in any case I would have expected the font sizes to be treated the same between the two implementations. FIREFOX VERSION AND PLATFORM: Firefox Nightly 56.0a1 (2017-07-26) (64-bit) BuildID=20170726030207 Windows 7 Home Premium SP1 (64-bit)
The two .gif files are when I had set the minimum font size to 14, then took a snippet of the AVS website for both with layout.css.servo.enabled set to True (new_profile_servo_true.GIF) and False (new_profile_servo_false.GIF). Both images cover about the same amount of screen space, omitting the advertising above and to the right of the area snipped.