When editing images, I often want to use typical keys to navigate the widgets inside the plugin interfaces. Most prominently the cursor keys, with which I wish to alter values or step through items of a dropdown menu. Showfoto eats those keys.

Please fix this behaviour: if there is a focused widget, it should get the full input. Thank you.

I should mention that I set Space as a custom shortcut to display the next image. But there are no specific actions assigned to unmodified cursor keys.

Reproducible: Always

Steps to Reproduce:
1. Open one or more images in Showfoto. Open a plugin, for example lens correction.
2. Switch input focus to a dropdown, e.g. camera manufacturer.
3. Use the cursor keys to select a different entry in the dropdown.

Actual Results:  
The plugin is cancelled and, depending on the pressed key (e.g. cursor up/down), another images gets displayed. If I already made changes to the current image, I am asked whether I want to save them.

Expected Results:  
The input should go the focused widget and evoke its standard behaviour. If no widget is focused (because no editing tool is active), then the keys may be used for other purposes.

I don't use KDE5/Qt5 applications yet for the most part. So I don't know whether Digikam 5 is also affected.