Plasma Netbook top panel randomly disappears from other desktops/workspaces when using Desktop Grid

[Galvatron]

Kubuntu 12.04, Geforce 7300GT + Forceware 295.40

I'm using Desktop Grid with Present Windows, triggered by the right top screen corner. From time to time, the top panel disappears from other desktops (sometimes the shadow remains), remaining only on the first one. I must restart Kwin to make it reappear. It likely has something to do with the panel's disappearance upon activation of the Desktop Grid.

Even though It seemed completely random, I've found one step to replicate it: Sometimes it happen upon activation of KRunner while on other desktops (this might also apply to the primary desktop, but I'm yet to find it).

[Ubuntu Foundations Team Bug Bot (crichton)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. It seems that your bug report is not filed about a specific source package though, rather it is just filed against Ubuntu in general. It is important that bug reports be filed about source packages so that people interested in the package can find the bugs about it. You can find some hints about determining what package your bug might be about at https://wiki.ubuntu.com/Bugs/FindRightPackage. You might also ask for help in the #ubuntu-bugs irc channel on Freenode.

To change the source package that this bug is filed about visit https://bugs.launchpad.net/ubuntu/+bug/990085/+editstatus and add the package name in the text box next to the word Package.

[This is an automated message. I apologize if it reached you inappropriately; please just reply to this message indicating so.]

[shankao (shankao)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have a package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage . I have classified this bug as a bug in kwin.

When reporting bugs in the future please use apport by using 'ubuntu-bug' and the name of the package affected. You can learn more about this functionality at https://help.ubuntu.com/community/ReportingBugs.