Removing a fixed date in an epic may lead to wrong settings

Summary

When you remove a date from a start or due date for an epic, the value is automatically set to Fixed, even if it was previously set to From milestone.

This is not reflected in the UI, so you can still see From milestone as selected. If you refresh the page, you can see it is set to Fixed instead.

This could be very misleading in case you move to From milestones and then you want to remove the date to "clean up" the field.

Steps to reproduce

  1. set a start date to an epic
  2. set the date to From milestones
  3. click remove for the date

At this point, you can see that date is removed, and start is set to From milestones. Refresh the page to see that the current setting is Fixed with no date instead.

Example Project

Any epic.

What is the current bug behavior?

Removing the date set Fixed without showing it in the UI.

What is the expected correct behavior?

Removing the date should not set Fixed, or at least show it has been selected.