nuxeo-directory-suggestion in a workflow task displays id only

Studio-side:

1. create a vocabulary myVocab with several entries
2. create a workflow
3. add a variable to the workflow that points to myVocab
4. add 2 approve tasks named Approve (by default) and ApproveB
5. add the myVocab variable to both tasks
6. in Designer, generate the layouts

Server-side:

1. sync the project
2. create a workspace
3. create a File document
4. start the workflow
5. select a vocabulary entry
6. observe the label is displayed
7. approve the task
8. enter the second task
9. observe the is NOT displayed appear, the id appears instead (see attached screenshot)

Expected behavior: the vocabulary should be resolved and properly displayed
Note: this is similar to ELEMENTS-886 but with a different scenario. This come from the same origin and maybe linked to what the server returned (displayedLabel).