"Edit stat values" is not updated with added models

This seems to be a bug.

Steps to reproduce:

1. go to the o3web website
2. "Edit Graph" -> Models -> "Edit Group Members"
3. Remove all current models from the group
4. Select e.g. all "refC2" models, add them to the group
5. Models are correctly added on the "OCTS Plot" and shown
6. Go to "Models" -> "Edit statistical values"
7. Only three original models are shown

Expected behaviour:

Newly added models are also correctly shown in the "Edit statistical values" window.

UPDATE: If in the "Edit Statistical values" window, one goes to the "Search" field and simply pushes "Enter", models seem to appear