Drag-(re)arranging IM tabs doesn't work

Description

Left-click an IM tab and attempting to drag doesn't actually drag-(re)arrange the IM tab.

(Broken for both horizonal/vertical orientation - see comments below)

Environment

None

Status

Assignee

Kitty Barnett

Reporter

Kitty Barnett

Labels

None

Feedback Reporter

None

Viewer Channel

None

Viewer Version

None

Components

Fix versions

Affects versions

R10
R11 (Beta)
R10 (Beta)

Priority

Major