"Week starts on" has no effect for existing events

[asymmetric]

Problem

When I select "Week starts on Monday" on an existing event (e.g. this one), the "Group availability" table stays with Sunday as the first day.

This is not the behaviour I expect, and is inconsistent with the "Time Format" option, which has immediate effect.

Proposed feature or solution

Clicking on "Week starts on Monday/Sunday" updates the table for an existing event.

Alternatives

No response

Additional information

No response

[chris2fr]

See also #321