1429993 - When the Home Assistant sidebar is initially open and then collapsed, the header doesn't reposition itself

Status: RESOLVED DUPLICATE of bug 1430034

(Core :: DOM: Core & HTML, defect, P2)

Description

[Matthew N. [:MattN]]

Attachment: Screenshot-2018-1-11 Home Assistant.png (actual result)

MacOS running 59.0a1 (2018-01-11) (64-bit)

STR:
1) Ensure dom.webcomponents.customelements.enabled = true
2) Visit a demo install of Home Assistant: http://hass.thehomeserver.net:8223/states (password = mozilla, choose to remember)
3) Ensure the left sidebar is in the open/visible state by clicking the hamburger menu in the top-left
4) Do a force-reload (Command-Shift-R on Mac). The left sidebar should remember its open state and be open by default
5) Click the "<" arrow between "Home Assistant" and "Home" on the header to close the sidebar

Expected result:
The sidebar closes and the space that it occupied would be used by the main content and blue header.

Actual result:
The sidebar closes and the main content area (right side) grows but the blue header stays offset from the left (it doesn't move).

The problem doesn't occur with dom.webcomponents.customelements.enabled = false.

Comment 1

[Hsin-Yi Tsai (she/her) [:hsinyi]]

CE enabled in only 59 *nightly*, so modified the firefox59 status.

Comment 2

[Edgar Chen [:edgar] (Parental leave until Oct. 09.)]

This issue doesn't happen on Firefox Nightly 59.0a1 (20180117220327).
It looks like bug 1430034 also fix this. Close as duplicated of bug 1430034.