On Monday, 28 December 2020 00:10:54 GMT Michael wrote:
> On Sunday, 27 December 2020 21:01:09 GMT antlists wrote:
> > On 27/12/2020 18:51, Michael wrote:
> > > Restarting the desktop using Xorg does NOT fix this problem.  Otherwise,
> > > both Plasma on Wayland and Xorg work fine - except the clipboard does
> > > not
> > > work on Wayland (middle click won't paste selected text on another
> > > window).
> > 
> > This sounds to me like a side-effect of Wayland security. I don't really
> > know anything about it, but I get the impression that talking between
> > windows is an unsolved security problem.
> > 
> > Of course, it could be it's a solved problem, but you've hit a glitch...
> > 
> > Cheers,
> > Wol
> 
> Yes, the clipboard issue is due to the isolation between application windows
> for security reasons.  It should also stop keyloggers having a go at my
> typing.  Annoying nonetheless, I hadn't realised how much I use the middle-
> click clipboard feature!  Selecting text with the mouse, then using right-
> click Copy (or Ctrl+c) and right-click Paste (Ctrl+v) works, as a long
> winded alternative.
> 
> I wonder if the message preview pane problem in Kmail is also caused by the
> same wayland window isolation?  Hmm ...

The workaround for the black message preview pane is to resize the root Kmail 
window.  When redrawn the message preview pane shows its contents.  Resizing 
has to take place in a single operation and left alone for a few seconds.  If 
multiple resizing actions take place then invariably Kmail becomes 
unresponsive and crashes.  QtWayland complains about something or other not 
implemented, so I assume some coding in Kmail needs to be polished to make it 
work more smoothly in Wayland.