Search filter "People you follow" doesn't work

[friapro]

Steps to reproduce:

• Use the standard Twitter search
• Search for a keyword
• Click "Show" next to "Search filters" (to the left)
• Select "People you know" in the "From anyone" drop-down menu

The search page reloads, but it still only shows tweets from everyone, not only from people you follow.

Tried on GoodTwitter 2.0. Firefox 60.8.0esr (64-bit), Debian GNU/Linux 9.9 (stretch).