Newly created issue on a board can't set milestone

Summary

When creating a new issue on a board, it is not possible to set the milestone without reloading

Steps to reproduce

• have a group issue board
• have a project in the group
• have a milestone in the group
• Navigate to the group board
• create a new issue on the board
• watch the issue configuration on the far right appear
• try to set a milestone

Example Project

https://gitlab.com/groups/Project-FiFo/FiFo/boards

What is the current bug behavior?

The milestone remains empty

What is the expected correct behavior?

A milestone is set to the issue

Output of checks

This bug happens on GitLab.com