Problem with widget and custom sidebar

Hi,

I have a problem with this plugin since few month :
> If I put the widget in a custom sidebar, nothing appears.
> If I put it in one of the classical sidebar of the theme “Twenty-fourteen”, it works
> If I put it in the text editor it works.

But, of course, i’d like to have it in the special sidebar.

Complementary informations:

• Everything is up to date.
• I’m using a child theme for Twenty-Fourteen
• I have both test and prod server.
• It works on the test server

Any ideas ?

Thanks ??
Bob

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