Updating a child term updates the parent term instead…

If I have a taxonomy tree like this (tids in parentheses):

Forest (140)
House (141)
|~Door (162)
|~Window (163)
Ground (535)

And I go to admin/content/taxonomy_manager/voc/7, expand the house tree and click on Door to edit, then change something (add a synonym or whatever), it will do an AJAX POST to the server with the data to be updated.

This post has `edit-term-data-tid` set to 162 (correct) and `tid` set to 141 (the root term).
This causes the changes I've made to the child term (162) to be applied to the root term (141).
I think this is a result of the way the whole form structure is made, so I haven't made an attempt at fixing that, but I have changed the Drupal page callback to prefer `edit-term-data-tid` (and `edit-term-data-vid`) instead of the other values that point to the root.

This does solve the problem for me, and if this code is still maintained, someone should probably take a look at this.