Both Icon Only Task Manager and default task manager display a weird windows thumbnail /see photo) without windows title and icon. That occours randomly during the session. When it occours it go back to normal after 2-3 thumbnail visualization. Reproducible: Sometimes Steps to Reproduce: 1. Move the mouse pointer on a icon in the taskbar 2. see the thumbnail Actual Results: sometimes it is without icon and title Expected Results: it should shows icon and title of the window My videocard is Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) I use OpenGL 3.1 for Kwin Actually I use Manjaro not Arch but I don't think it is a distro-specific problem.
comment mentions a screenshot that is not present
I inserted it in the "URL" field. Btw: https://docs.google.com/uc?id=0B0MykrNTpt9LUTM3a1VPWVR5cEE
Created attachment 92129 [details] screenshot of the problem
screenshots are better as atachment (done) very rarely i can reproduce it tough
For me the bug occurs more often than not
I noted that if I move the mouse pointer on a launcher of a not-running program in the taskbar and then I move the mouse back on the running program, the thumbnail is correct.
Plasma 5.3 doesn't solve the problem
can I help with some test?
I noticed that the problem appears when there are launchers in the bar. Whithout launcher all is fine. Icons dont create the problem.
I find this issue quite annoying as well and tracked it down to Layout.minimumWidth: width Layout.minimumHeight: height Layout.maximumWidth: width Layout.maximumHeight: height in /usr/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/ToolTipDelegate.qml:40 Can you confirm that it works (reliably) if you remove or comment out those four lines? I'm not sure what the purpose of those lines is, as the element is "Column" and width and height are set manually.
>I find this issue quite annoying as well and tracked it down to Layout.minimumWidth: width is fundamentally completely completely wrong. If you're in a layout, the layout is controlling your width; you've basically got a binding loop. I'll change it to what it should be.
The Layout attached property isn't actually being used by a layout. Plasma Dialog uses them as extra size hints
@Fabian: your suggestion seems to work well
Bump. (In reply to David Edmundson from comment #12) > The Layout attached property isn't actually being used by a layout. > Plasma Dialog uses them as extra size hints What for? I mean, it works 100% fine without them.
Git commit 0ed62041f1715d4e732576bde3e98b7c6d1f3190 by David Rosca, on behalf of Fabian Vogt. Committed on 25/11/2015 at 14:08. Pushed by drosca into branch 'Plasma/5.5'. taskmanager: Fix sometimes not showing labels in tooltip FIXED-IN: 5.5.0 REVIEW: 126162 M +0 -4 applets/taskmanager/package/contents/ui/ToolTipDelegate.qml http://commits.kde.org/plasma-desktop/0ed62041f1715d4e732576bde3e98b7c6d1f3190