Date/time custom fields clearing when editing manually

Issue Summary

When adding manually the time in a date time picker custom field it only accepts a specific format, for example, "8:32pm" if a different format is typed like spaces or upper cases, the field is cleared.

Steps to Reproduce

1. Edit the time from a custom date/time field
2. Try typing it in different formats, it will only find a valid value if no spaces are entered and using lower case
3. Video example:
   https://share.getcloudapp.com/NQuwmw2E

Expected Results

All formats should be valid

Actual Results

If the correct format is not used the value is cleared

Workaround

Use the time without spaces and in lower case like "8:32pm"