Kmail crashes when typing a recipient email

[Bennett Piater]

On Saturday, October 18, 2025 5:39:47 PM Central European Summer Time Ingo 
Klöcker wrote:
> Did you try running it with gdb to get a backtrace?
> 
> $ gdb kmail
> [some output of gdb]
> (gdb) run
> [KMail starts; make it crash]
> (gdb) bt -full
> [gdb should print a backtrace]
> 
> Regards,
> Ingo

That doesn't find anything at all:

(gdb) bt -full
No stack.

The only thing I can deduce is that it must have something to do with drawing 
the suggested recipients. It only occurs when I type the third character, and 
only if that matches existing contacts - I can type random strings without 
issue.
This would also match the wayland error I get (inlined from the bug report):

qt.qpa.wayland.textinput: virtual void 
QtWaylandClient::QWaylandTextInputv3::disableSurface(wl_surface*) Try to 
disable surface 0x62e32b0fb590 with focusing surface 0x62e32a255420
zxdg_exporter_v2#75: error 0: surface must be an xdg_toplevel

Odd. I have never seen a cpp program exit so hard without at least producing a 
coredump.

Cheers (und Liebe Grüße!),
Bennett