* If you search for an action and then switch to a different set of defaults, no actions are loaded in the new sheet at all.
* When pressing "default" action drop-down all the shortcuts don't revert to defaults.
* When clicking on the default check box when it is set to 'none' I get popup for ambiguous shortcuts complaining about other shortcuts with "none" as default shortcut. Screenshot here -> https://dl.dropboxusercontent.com/u/37777793/shortcuts.png
* Shortcut conflict checking should be done at startup and when loading new default layouts.