can't get project list per language in a group

I wanted to have a look at Zanata and translate a little bit, but I can't get the project list for a language. With Firefox even with all extension deactivated. Note, I'm using version 61.0.1 (64 bits).

Here is how to reproduce it:

1. Log in

2. Go to Explore: https://fedora.zanata.org/explore

3. Go to the end of the page, you'll see GROUPS

4. Ctrl+F "fre", click on French

5. Projects list is empty while it should be full.