URL Suggestion too tall when title contains characters from Mathematical Alphanumeric Unicode Range
Categories
(Core :: Layout: Text and Fonts, defect)
Tracking
()
People
(Reporter: ceda_ei, Unassigned)
Details
Attachments
(2 files)
Screenshot of the bug in action.
User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Firefox/78.0
Steps to reproduce:
I tried the following steps on Windows and Linux. However, the bug only appears in Firefox for Linux. I am using Firefox Developer Edition v83.0.b2. The bug is reproducible in a new profile without any userChrome.
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Create a file with the following contents
<html><head><title>oonikee 𝐀</title></head></html>
Notice the A here is U+1D400 from Mathematical Alphanumeric Unicode Range. -
Next open another tab and type ooniqee (so that the previous file shows up in suggestions)
Actual results:
The suggestion entry for the previous file is much taller than others.
Expected results:
The suggestion entry should have been only as tall as other entries.
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Updated•4 years ago
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Comment on attachment 9183626 [details]
Screen recording of the bug in a webpage as well as the megabar
I'm experiencing the same issue in a more recent version of Firefox, 83.0b3. It appears as if the issue affects text highlighting as well and prevents the user from highlighting specific text on the line above the one containing the character.
I believe the bug's component needs to be reassigned from Address Bar to something else, possibly general since the issue seems to exist with calculation of height of certain glyphs.
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Comment 4•4 years ago
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I can reproduce this on Mac, but it's not nearly as bad as the screenshots and video. I don't know enough about text layout to know whether this is intended or not, but given that it also affects highlighting and not only the urlbar, we can move the bug and see what people who work on that think. If it is intended, then we can move this bug back to Address Bar, and there may be some steps we can take to prevent it from happening in the urlbar specifically.
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Comment 5•4 years ago
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Looks like bug 1671525, which is under active investigation as well.
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Comment 6•4 years ago
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Can you tell what the fonts in use are when you hit this bug with the inspector's "fonts" panel? I'm on Fedora but can't reproduce the huge height so there must be something about the fallback font we're using to match those glyphs.
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Comment 7•4 years ago
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For example I get DejaVuMathTeXGyre-Regular when inspecting the snippet of code on comment 0.
(In reply to Emilio Cobos Álvarez (:emilio) from comment #6)
Can you tell what the fonts in use are when you hit this bug with the inspector's "fonts" panel? I'm on Fedora but can't reproduce the huge height so there must be something about the fallback font we're using to match those glyphs.
I can't reproduce the bug in the webpage with selection. I can only reproduce it in the suggestions. Regardless, the font in the webpage is Dejavu Serif Bold.
From the browser investigator, I found out the font used in the url suggestions is LatinModernMathJax_Normal-Regular. Removing that font, it fellback to DejaVu Math TeX Gyre in which case the suggestion was of normal height.
Description
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