I think I found a new plasma5 more precisely konsole5 bug
Can someone confirm it's not me before I post a bug report at kde
to reproduce
start konsole5 from a menu, press ctrl++ a few times to increase the font, enter any commend
>ls -l
select the output, try to right click on it so you can copy it, konsole freezes.

ps anybody know how I can change konsole's font, I remember in kde4 there was an easy way to do this.

edit I'm using plasma 5.5 from all updated