Missing source for StylePluginBase.php on API page

API page: https://api.drupal.org/api/drupal/core!modules!views!src!Plugin!views!st...

What are the steps required to reproduce the bug?

1. Visit https://api.drupal.org/api/drupal/core!modules!views!src!Plugin!views!st....
2. Click on View source under core/modules/views/src/Plugin/views/style/StylePluginBase.php.

What behavior were you expecting?

I was expecting to see the source code for core/modules/views/src/Plugin/views/style/StylePluginBase.php.

What happened instead?

Nothing happened.

If I expand Same filename and directory in other branches and choose either 8.9.x or 9, I can click on View source under core/modules/views/src/Plugin/views/style/StylePluginBase.php to see the source code.

Apologies if this has been mentioned before, but a search for api.drupal.org in the issue queue returned no results.