Deletion of a taxonomy field from a content type leaves references to affected nodes in taxonomy_index, which results in vocabulary terms remaining attached to those nodes.
Steps to replicate:
admin/structure/taxonomy/tags and add a new term.admin/structure/types and add a new content type.node/add and add a node of the content type created in Step #2. Select the term you added in Step #1 in the field from Step #3 and save.admin/structure/types and click on the "Manage fields" tab.admin/structure/taxonomy/tags and click on the tag created in Step #1.Expected behaviour
You are given the message "If you have any content left in this field, it will be lost. This action cannot be undone." indicating that any tags given to content of this content type will be removed.
Actual behaviour
Content remains tagged with the vocabulary despite not having the field any more. These can be removed by readding the term reference field, removing the tags for the content and then removing the field again.
Deleting references by vocabulary is complicated by the potential for data loss if two taxonomy fields on a content type reference the same vocabulary. Proposed resolution is to clear and rebuild taxonomy_index. This may cause slowdown on large sites; suggested that it should run through Queue API.
This issue is currently waiting on a patch in #89181: Use queue API for node and comment, user, node multiple deletes → .
Warning message noting the potential delay in taxonomy re-indexing and a link to cron for immediate rebuild if desired.
Needs work
11.0 🔥
After being applied to the 8.x branch, it should be considered for backport to the 7.x branch. Note: This tag should generally remain even after the backport has been written, approved, and committed.
Not all content is available!
It's likely this issue predates Contrib.social: some issue and comment data are missing.
Just ran into this, steps to reproduce:
- Site had existing term reference field
- New term reference field added to facilitate manual content entry changes before feature launch
- Original term reference field deleted on feature launch
- Term pages show content for field that no longer exists