Mystery of the disappearing panel

[Gene Smith]

Patrick O'Callaghan wrote, On 02/26/2010 07:30 PM:
> I use auto-hide for the panel, but sometimes it gets stuck in the
> 'visible' position and won't disappear. This can be dealt with by
> toggling the autohide feature off and on again, which usually fixes it.
>
> Rather more difficult is when it doesn't auto-appear after hiding
> itself. It only happens occasionally, and it's hard to determine exactly
> what causes it, but there could be a correlation with cpu activity,
> including a lot of USB (pendrive) I/O.
>
> Once it disappears, there's no reliable way to get it back other than
> logging out and in again.
>
> Does anyone have a better way? This is 4.4 but the same thing has also
> happened with every previous 4.x version.
>
> poc
>

I have not seen the panel get stuck off or on and I have been using it 
hidden forever. However, there is a bug that is somewhat similar that I 
have seen in 4.x:

https://bugs.kde.org/show_bug.cgi?id=205116

-gene