I have the same problem as soon as swithched to KitKat.
The program after use is still as an active application. Try to deactivate it by presssing the center button.
That solves the issue
After upgrading to 4.4 I had the same problem (strangely only with Nuance voices). I tried all kinds of suggestions but this is the solution. Good catch μέρμηγκα!
Bookmarks