Created attachment 106815 [details] demonstration open a number of firefox windows enough to create a group in your task manager, close windows from this group when the group is undone, the task manager keeps an empty list open. See my gif please.
Easiest solution probably would be just closing the popup when opening the context menu. (Just needs to make sure we don't close the popup for context menu within the popup, obviously)
... and also when ungrouping via middle click, or so. Perhaps not as straight-forward as I thought ;)
When closing a single entry from a group menu, the group menu also used to resize. Now it keeps a blank entry.
I'll fix this on Monday or so, currently still recovering from Akademy.
Git commit a1e2ddd67a1226aa796c70fdfce3a8cf81a3f2e4 by Eike Hein. Committed on 01/08/2017 at 13:31. Pushed by hein into branch 'Plasma/5.8'. Fix group dialog no longer resizing/closing as windows are closed and the group is dissolved Summary: Also delays the dialog resize until after the move transition ends if there's going to be one, for a less jarring experience. Reviewers: #plasma Subscribers: plasma-devel Tags: #plasma Differential Revision: https://phabricator.kde.org/D7035 M +14 -2 applets/taskmanager/package/contents/ui/GroupDialog.qml M +6 -0 applets/taskmanager/package/contents/ui/Task.qml https://commits.kde.org/plasma-desktop/a1e2ddd67a1226aa796c70fdfce3a8cf81a3f2e4