In the Filter Log Viewer, the checkbox fields ("Log filter activities" and the four under "Logging Details") extend across the width of the window. This makes it too easy to accidentally change a checkbox.

Reproducible: Always

Steps to Reproduce:
1. Set up filter logging.
2. Click on main kmail window to get focus, leaving right hand side of the filter log viewer window showing underneath.
3. Do testing of filtering.
4. Click on right hand side of filter log viewer to get focus.
5. Continue testing.
6. Realise that a checkbox was accidentally changed in step 4.


Expected Results:  
It should not be possible to change a checkbox by clicking on the right of the window.