[Webkit-unassigned] [Bug 158771] New: element boundaries suppress line break opportunity

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=158771

            Bug ID: 158771
           Summary: element boundaries suppress line break opportunity
    Classification: Unclassified
           Product: WebKit
           Version: Safari 9
          Hardware: Macintosh
                OS: OS X 10.11
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: florian at rivoal.net
                CC: simon.fraser at apple.com

I've attached a example where Safari suppresses break opportunities at element boundaries.

A span with no styles attached should never affect the layout, but here it does.

This bug occurs much more often in Japanese or Chinese than in English, since these languages do no use spaces as word separators, and therefore it is common to have, as in this example, a <span> (or an <em>, or a <strong>...) not surrounded with spaces.

It appears that some variants of this bug have already been addressed in the past, but as this test case shows, some issues remain.

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