Primary tabs order when editing a taxonomy term are reversed

In Drupal core changes are made on on 11.x (our main development branch) first, and are then back ported as needed according to the Core change policies → . Thanks

@quietone -- Ah, thanks. I used 11.2.x-dev because the issue is present in 11.2.x and not in 11.1.x and I thought I should be specific. Thanks for the clarification and update.

@annmarysruthy -- Thanks for your work on this!

I manually applied the changes in your merge request !12697 to core/modules/taxonomy/taxonomy.links.task.yml and that resulted in the tabs displaying in this order:
Delete, View, Edit, Revisions.

That's not quite what I was looking for. The order should be:
View, Edit, Delete, Revisions.

I'm guessing that means weights should be added to all of the items in core/modules/taxonomy/taxonomy.links.task.yml.

Feeling a bit brave, since you pointed me to making changes in core/modules/taxonomy/taxonomy.links.task.yml, I tried the following:

entity.taxonomy_term.canonical:
  title: 'View'
  route_name: entity.taxonomy_term.canonical
  base_route: entity.taxonomy_term.canonical
  weight: 0

entity.taxonomy_term.edit_form:
  title: 'Edit'
  route_name: entity.taxonomy_term.edit_form
  base_route: entity.taxonomy_term.canonical
  weight: 10

entity.taxonomy_term.delete_form:
  title: 'Delete'
  route_name: entity.taxonomy_term.delete_form
  base_route: entity.taxonomy_term.canonical
  weight: 20

entity.taxonomy_vocabulary.overview_form:
  title: 'List'
  route_name: entity.taxonomy_vocabulary.overview_form
  base_route: entity.taxonomy_vocabulary.overview_form
  weight: 30

entity.taxonomy_vocabulary.edit_form:
  title: 'Edit'
  route_name: entity.taxonomy_vocabulary.edit_form
  base_route: entity.taxonomy_vocabulary.overview_form
  weight: 40

This puts the tabs in the right order.

Writing this kind of code is not my area of expertise, however, so I don't know if this is the correct way to resolve this issue.

Thanks again for your help. I set the status back to "Needs work" since the solution in the merge request did not solve the issue. I hope that's the right thing to do. I'm learning as I go.

Thanks for pointing that out! You're right — without an explicit weight on the View tab, it was relying on the default which could shift ordering. I've added weight: 0 to entity.taxonomy_term.canonical so all the tabs under that base route now have explicit weights. The taxonomy_vocabulary.* ones are under a different base_route, so I left them as-is to avoid altering their order unnecessarily.

Kindly re review

### Reproduction
* Confirmed the original tab order bug (View › Delete › Edit › Revisions) on 11.x-dev, clean install.

### Patch / MR tested
* Applied MR !12697 locally (`core/modules/taxonomy/taxonomy.links.task.yml` changes).

### Results
* Tabs now appear in the expected order: **View › Edit › Delete › Revisions**. ✔️
* Checked term add / edit / delete pages – no regressions.
* Ran `phpunit` functional tests – all green.

### Environment
Drupal 11.2.x, PHP 8.3, MySQL 8.0, DDEV 1.25 (Docker + WSL2).

**Marking Status → RTBC.**

@annmarysruthy -- Thanks again for your work on this and for your explanation; that's very helpful.

I manually applied the changes in your revised MR !12697 to my Drupal 11.2.2 site and the tabs now display in the correct order.

I agree with @sagarsingh24 that the status should now be RTBC. I updated the issue summary and changed the status.

Thank you both!

Adjusted the empty lines to group together the related tabs/ routes (in this case there are 2x groups): this 'technique' is used in other core *.links.task.yml files in core modules including system and block.