file open order with Mousepad, Geany, Code, Audacity, etc. - XFCE

Hi,
In Thunar, when I'm in "detailed view", a folder view show an ascending list of its sub-folders, then follows an ascending list of files.
So far so good.

When I'm in Mousepad, Geany, Code, Audacity, etc. and I go to file Open (CTRL+O), it prompts a window to select files but this time it's filtering ascending files & sub-folders without distinction, not as Thunar which builds 2 groups, one sort for folders type, then one sort for files type.

How can I have this Thunar behaviour with apps such as Mousepad, Geany, etc. ?

P.S. Gimp has same behaviour as Thunar.

Mousepad - Click on home, right click:

Recent files is recent files, cannot change it's behaviour AFAICS.

Thanks, it did also apply Geany, Code, Audacity, etc.

1/ So what central app or configuration file which is controlling all these apps behaviour?

2/ Is it as well possible to change the default icon depicting folders, as I found not sufficiently differentiable from files icon.

I assume GTK3, change your theme to change the folders.

I assume GTK3, change your theme to change the folders.
2/ Is it as well possible to change the default icon depicting folders, as I found not sufficiently differentiable from files icon.

Found that Appearance> Icons is responsible for that.

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