I'm using the Autokey-application to make writing the same thing slightly faster for log-searches and stuff, so as an example, I have ;send which then replaces the typed abbreviation with smtpfilter*/mail-20160309*
Based on a Python script in Autokey: 
date = system.exec_command("date +'%Y%m%d'*")
keyboard.send_keys("smtpfilter*/mail-%s" % date)

It works fine everywhere. Ubuntu standard terminal, Terminator, and Guake. 
However, in Konsole and Yakuake, it works very rarely. Often it messes up the output, writes something extremely weird. And after that, any key you press either doesn't work, or types part of the abbreviation. 
In the video in the link, I hold down backspace on each attempt, and when the abbreviation fails and writes something mixed up, it starts deleting a bit, then it writes part of the abbreviation, causing that weird back and forth.. all while holding Backspace. 

Since it works in standard ubuntu terminal, guake and terminator, it seems to be something with Konsole and Yakuake. 
I even tried both the qt version, and gtk version of Autokey, and a completely fresh install of Kubuntu, but it does it in that as well, so seems to be something with KDE-consoles that messes up during the output.
Only way to stop it from doing that, is completely close Konsole and start it again. Opening a new tab will have the same issue. 

Reproducible: Always

Steps to Reproduce:
1. Install Autokey
2. Create a script in it, with the following: 
date = system.exec_command("date +'%Y%m%d'*")
keyboard.send_keys("smtpfilter*/mail-%s" % date)
3. Add an abbreviation, choose it should trigger instantly, and save. 
4. Open Konsole or Yakuake, and type the abbreviation. 

Actual Results:  
Almost every time, it writes something completely mixed up, like: "s/filter*ma*2010" instead of: "smtpfilter*/mail-20160309*"
Afterwards, all keyboard input fails. Occasionally it actually write what you want it to, but most of the time it just writes part of the abbreviation. Holding backspace causes very weird going back and forth.

Occasionally it does work, but it usually only works once, then it starts messing up again. 

Opening a window afterwards, like the About page, or Konsole settings seem to cause the application to hang.

Expected Results:  
It would output "smtpfilter*/mail-20160309*" and keyboard input would continue to work properly.

Currently using:
Ubuntu 14.04, 
Fresh Kubuntu install: 15.10 (same jumpy results). 

Konsole version 2.13.2
Yakuake version: 2.9.9
KDE Platform: 4.13.3

I'm actually not sure if this is a bug with Autokey or Konsole, but since it works with other terminals, it seems to be Konsole/Yakuake causing the issues.