Bug 68193 - Vertical border-spacing space gets doubled across row-group elements
Summary: Vertical border-spacing space gets doubled across row-group elements
Status: RESOLVED DUPLICATE of bug 20040
Alias: None
Product: WebKit
Classification: Unclassified
Component: Tables (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL: data:text/html;charset=utf-8,<!DOCTYP...
Keywords:
Depends on:
Blocks:
 
Reported: 2011-09-15 14:34 PDT by Tab Atkins
Modified: 2011-09-27 23:45 PDT (History)
2 users (show)

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Description Tab Atkins 2011-09-15 14:34:47 PDT 
See the data url attached.

The vertical component of 'border-spacing' is doubled between rows that are part of different row-groups.  In the test case, the first row is in a <thead> and the latter two are in a <tbody>, so the gap between the first and second row is 20px, while the gap between the second and third is 10px, which is what is actually set in the CSS.

(I suspect we're using machinery similar or identical to margin collapsing, and making row groups prevent collapsing across themselves.)
Comment 1 Daniel Bates 2011-09-27 23:45:12 PDT 

*** This bug has been marked as a duplicate of bug 20040 ***