T-Bird compose problem - KDE only

[Patrick O'Callaghan]

On Tue, 2015-06-16 at 15:52 +0800, Ed Greshko wrote:
> This is a very odd problem.  It happens for me on a newly installed 
> F22 as well as an F21->F22 upgraded system.
> 
> Start an instance of Thunderbird and konsole. 
> 
> In T-Bird pick "write" and then enter several lines of text in the 
> body of the message.
> 
> Then do an ls or something in knosole to get some text. 
> 
> Copy and then paste this text below the text you've just typed.
> 
> Position the cursor at the start of the pasted text and hit backspace 
> a few times.  Instead of the text being shifted up, a line of text 
> will be deleted.  So far, this seems to only happen with text taken 
> from konsole.  If I copy/paste text from Chrome I will not see this 
> problem.
> 
> Can someone try this to confirm?  I think it should be a konsole BZ 
> but not certain.
> Konsole outputPointer Control

Can you try changing the font size from the default and repeating the
test? On the Evolution list there are complaints about an editing bug
that looks like this (see 
https://bugzilla.gnome.org/show_bug.cgi?id=749712). Both Evo and TBird
are GTK apps.

poc