In 4.2 you can add Taxonomy Entry Assignment fields for content types. However there is an issue with the UI when editing these: When you edit any of them the selection is appended to the topmost item.

How to reproduce:

1. Edit content type
2. Add two TEA fields (tags_1, tags_2)
3. Edit a content object
4. Change selection for tags_2
5. Observe selection is set for tags_1 in the UI

Expectation would be for both fields to work independently.