In filter dialog, add subfolders checkbox
Gathering feedback
In filter dialog tab basic, add a checkbox work on all sub-folders so I do not need to save the filter in filter manager and for each single subfolder, load the filter again.
It's a little like "flat mode" in XnView, GeoSetter and other applications.
Alternative that is IMHO better for temporary information need: In MyLibrary search, offer all from filter dialog
I like this idea 
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