SUMMARY
Yakuake loses focus when I rename a terminal session using the keyboard shortcut. I believe this is a recent regression because I use yakuake daily and I first noticed it after I upgraded to Ubuntu 19.04. 

STEPS TO REPRODUCE
1. Give focus to another program (firefox, etc.)
2. Expand already running yakauke terminal with F12
3. Press Ctrl+Alt+S to begin editing the "Shell No. 1" name of the terminal session
4. Edit the session name
5. Press Enter

OBSERVED RESULT
Keyboard input is not sent to the terminal. This state persists until I click on the yakuake window. Its unclear where the keyboard input is being sent to, it doesn't appear to be directed to the window that was active before expanding yakuake with F12.

EXPECTED RESULT
As soon as the new terminal session name is saved, keyboard input should immediately be directed back to the terminal. No mouse usage should be required, since that would defeat the purpose of using yakuake and keyboard shortcuts.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Kubuntu 19.04
KDE Plasma Version: 5.15.4
KDE Frameworks Version: 5.56.0
Qt Version: 5.12.2

ADDITIONAL INFORMATION
I believe my Kwin settings are pretty standard, I use click to focus, low focus stealing protection, and "click raises window" is enabled.

Thanks and let me know if more information about my setup is needed to try to reproduce this.