357486 - [reflow branch] Vertical scrollbar forces horizontal scrollbar

Status: RESOLVED FIXED

(Core :: Layout, defect)

Description

[Bill Gianopoulos [:WG9s]]

When the page becomes long enough for a vertical scrollbar appears, a horizontal scrollbar also appears even if the page should fit without one.  The scrollbar scrolls the window left and right by the width of the vertical scrollbar.

Evidently when the vertical scrollbar is added the width of the window is not being recomputed and a reflow is not being triggered.

Comment 1

[Bill Gianopoulos [:WG9s]]

Attachment: testcase

Trivial, but I attached a testcase anyway.  You can see just as radily see this bug on this bugzilla page.

Comment 2

[David Baron :dbaron: (⌚️UTC-5, no longer working on Mozilla)]

I fixed this on Friday (10-27).  Thanks for the bug report -- although I noticed it myself before I saw the report, since it should have been pretty obvious.