Active trail not set in taxonomy menu

I had this issue too and realised that it was caused by some extra route parameters coming from the Taxonomy menu. Here is a patch that includes removing the non-default route parameters, code copied from https://www.drupal.org/project/drupal/issues/3359511 🐛 [regression] missing menu active trail in Drupal 9.5.9 Needs work .

I had the same problem with a view page.

#4 fixed the issue.

The patch is working when there is a main item a parent and a child like home - test - testchild, but I am having issues when there is just one parent menu item like home-test. In this case when I am on the test page the trial is not working which was working fine in the previous version.

Thank you for the patch. Working for me at all levels. No issues.

The code in the core issue seems to be quite different now, we should also have the constructor BC for the optional parameter, if only do not cause problems on sites during an update, I'm OK with not having a @trigger_error() as deprecation messages in contrib are always tricky.