The first key typed gets lost after switching focus to R Console using mouse. 

It is 100% reproducible.
Steps to reproduce:
1) start rkward
2) open R Console (e.g. Alt+5)
3) press Enter 10 times
4) click mouse in the Welcome window above the R Console
5) click mouse to the R Console
6) start typing - the first key pressed gets lost

Notes:
- step 3 is a must (when omitted, no key gets lost)
- when switching focus using shortcuts (Alt+0, Alt+5), no keys get lost, even when step 3 has been performed


RKWard is available in many different packagings, and sometimes problems are specific to one method of installation. How did you install RKWard (which file(s) did you download)?

dnf install rkward

---Session Info---
-- Frontend --
RKWard version: 0.6.5
KDE version (runtime): 4.14.25
KDE version (compile time): 4.14.21
Qt build key: x86_64 linux g++-4 full-config
Local KDE directory: /home/sieger/.kde/
RKWard storage directory: /home/sieger/.rkward/
Backend version (as known to the frontend): 3.3.1

Debug message file (this may contain relevant diagnostic output in case of trouble):
/tmp/rkward.frontend.k26048

-- Backend --
Debug message file (this may contain relevant diagnostic output in case of trouble):
/tmp/rkward.rbackend.J26054

R version (compile time): 3.3.1  (2016-06-21 r70800)
R runtime session info:
R version 3.3.1 (2016-06-21)
Platform: x86_64-redhat-linux-gnu (64-bit)
Running under: Fedora 24 (Workstation Edition)

locale:
 [1] LC_CTYPE=cs_CZ.utf8 LC_NUMERIC=C        LC_TIME=C          
 [4] LC_COLLATE=C        LC_MONETARY=C       LC_MESSAGES=C      
 [7] LC_PAPER=C          LC_NAME=C           LC_ADDRESS=C       
[10] LC_TELEPHONE=C      LC_MEASUREMENT=C    LC_IDENTIFICATION=C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] rkward_0.6.5

loaded via a namespace (and not attached):
[1] tools_3.3.1