bbPress.org

I have a site in 3 languages, made with the Enfold theme and the WPML plugin.
English: hidden
French: default
Dutch

In the footer widget area of the theme, I added the bbPress “Recent Topics” widget, and it is only showing in the French site. In the Dutch site, the footer widget area is empty.
This also happens in sidebars.
Other (bbPress) widgets work perfectly in both languages.

What can I do to solve this? Where can I find the code to change it?

I’m using WordPress 4.4, bbpress 2.5.8 & WPML 3.3.3