1356739 - display:none via CSS variable set in ::first-line produces shrink-to-fit block

Status: NEW

(Core :: Layout: Block and Inline, defect)

Description

[Oriol Brufau [:Oriol]]

Attachment: testcase.htm

Steps to reproduce:
1. In a block container, set some CSS variable to `block`
2. In its ::first-line pseudo-element, change the variable to `none`
3. Set the `display` property of some first-line descendant to the value of that variable.

Result: The descendant is displayed as a shrink-to-fit block.

Expected result: not obvious, since ::first-line depends on the box tree, and the box tree depends on the display values. So maybe let the descendant behave as if it weren't in the first line, and display it as a block. But don't shrink-to-fit it, that's nonsense.

Comment 1

[Oriol Brufau [:Oriol]]

This was fixed as a side-effect of bug 1694729. But you may want to add a test or something.