During the creation of OLMIS-6398, I noticed that when one deletes the already selected "Expiration Date", it is impossible to select "Start Date" from the future because the option is blocked.
Log in as administrator and go to the System Notifications.
Click the "Add System Notification" or "Edit" button next to any message.
Select the current date in "Expiry Date" and remove it.
Try to select a future "Start Date.
The option is blocked and one can select only a date form the past.
It's possible to select a future date manually →
It should be possible to select a future Start Date after removing Expiry Date.