I'm afraid I don't follow, what do you consider to be the problem here? The test case doesn't illustrate it very well and from your description it sounds like it is working as expected. I.e. text is not allowed to be smaller than the minimum font size.

Sorry if I was unclear. The issue is two fold:

1. There is no way to "unset" a minimum-font size, meaning that if I set it once, the lowest I can ever go to again is "6px" - not completely removing the option.

2. The minimum font-size is ignored for the text, but not for the padding, margin, etc.

Hopefully this video will illustrated it a little better: https://db.tt/KnuWqHsU

Notice how at the beginning, on a new profile, I have no minimum font-size set. Once I set it to "7px" the text-size uses the website's set font-size (preferred), but the padding and other elements using "em" use the set minimum font-size in Chrome's preferences. Afterwards, there is no way to return to the original state where there is no minimum font-size set.

Thank you for providing more feedback. Adding requester "eae@chromium.org" for another review and adding "Needs-Review" label for tracking.

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

None of the font sizes in the test ever go below the minimum font size. No matter what minimum font size I set I cannot get your test to ever resolve any to a value smaller to it. This is as expected.

As for there being no way to unset the minimum font size that is a chrome settings ui bug.

Sorry, what I'm really trying to point out is: the width, outline, etc all in EM are sized if someone sets the minimum font size (as you mentioned as expected) but the inconsistency is that the font-size for the text "TEST" using the font-size of that on the page, 0.55px. 0.55px * 40em == 22px, which is what the font-size is before AND after changing the minimum font-size.

If I set my minimum font-size to 10px then 40em should be 400px for the font-size.

Unless I misunderstand how it's supposed to work, I expect that "minimum font-size" would also apply to the text.

The minimum font size is applied after style resolution and is indeed applied to the text. It only comes into play when the minium is _higher_ than the resolved size. If you set the minimum to 24px you'll see that the text "TEST" is bumped up to 24.

can we add a way to unset "webkit.webprefs.minimum_font_size" in md-settings?

Forwarding. This is out of my purview

On some sites, the minimum font size doesn't override site styling.
e.g. with minimum font size set at 18, the text is
https://vuejs.org/guide/
is still too small

Should I make a separate report for this?

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Re #13: Yes please.

Cleaning up "Needs-Review" label as we are not using this label for triage anymore. Ref bug for this cleanup 684919