TYPO3 Core

Steps to reproduce:

0. install/active recycler
1. create a page and a category
2. assign the page to the category
3. delete the category
4. goto the trash bin and delete the category there
5. check the database, table "sys_category_record_mm"

Expected result:
sys_cetgory_record_mm should not have any relation to any category record.

What really happens:
After deletion of a category, all the mm-relations remain to pages or ttcontent are NOT deleted.

Further observations:
If afterwards a new category is created and the pages are assigned to that new category, the values in the sys_categories_relations_mm update and any old, non-existing ones disappear.