Someone “fixed” #348431, which was not a bug. Now krunner hides automatically and clears the search bar upon losing focus, making it unusable for many purposes. For example, you can no longer paste multiple things to it.

Reproducible: Always

Steps to Reproduce:
1. Activate krunner.
2. Spend a lot of time typing a complex mathematical expression.
3. Activate another window.
4. Slap forehead.

Actual Results:  
krunner hides. Activating it again results in an empty search bar.

Expected Results:  
krunner should stay until explicitly closed, or alternatively, activating it again should retain the input.

Should be configurable.