The header being the button to collapse a thread is fundamentally unintuitive. It doesn't look like a button, it isn't treated like a button, and it means mis-clicks (and there's a biiiig area to misclick in) collapses whatever you were doing.
Version: unspecified
Severity: enhancement
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=58365
bingle-admin wrote:
The WMF core features team tracks this bug on Mingle card https://mingle.corp.wikimedia.org/projects/flow/cards/636, but people from the community are welcome to contribute here and in Gerrit.
See also bug 57696 (Hiding topics and posts in Flow should work consistently)
My proposed solution to resolve the inconsistency would fix this bug, too.
Actually the topic bar[*] is a button, it has mw-ui-button class and gets the beveled bottom on hover. It is assigned a background-color that prevents the usual button darkening on click; I think that's a bug in the CSS, I filed bug 58800.
I'm not disagreeing that about the substance of this bug. My 2 cents is we could reuse the collapse-expand indicator buttons that are already present in Vector's left-hand collapsible navigation. As I recall the designer's concern was to avoid having icons in a left-hand margin as well as a right-hand margin with the flag and permalink.
Hope this helps.