Duplicate file extension of archives on release page of projects

The markup in the html is

<a href="https://ftp.drupal.org/files/projects/tfa_migration-1.0.3.tar.gz" class="download">
  Download 
  <span class="filename">tfa_migration-1.0.3.tar.gz</span>
  <span class="extension">tar.gz</span>
</a>

So it must be something showing/hiding the class.

It happens when the screen size is under 420px. I will open an MR.

MR: https://git.drupalcode.org/project/bluecheese/-/merge_requests/154/diffs
Tested here: https://fjgarlin-drupal.dev.devdrupal.org/project/tfa_migration/releases...

Side by side d.o vs my own copy of d.o:

Tested the fix on new dev instance of @fjgarlin , issue seems fixed.

Thanks @fjgarlin for the quick fix.

Setting issue to RTBC.