The language selector adapts according to the number of languages. For a big amount of languages, results are shown in 4 columns with a wide selector, but for a smaller number of languages, a much compact two column layout is used. The example below shows an article available in 16 languages:
While grouping languages per region can be convenient for very long lists, when the list is short it may not be that useful since it adds fragmentation and duplication of some languages.
This ticket proposes to keep the grouping by region for long language lists but not do so for shorter lists. In this way, shorter lists will only include two groups: "Suggested languages" and "All languages". The same approach can be used when searching, since filtered lists after search are expected to be short.