Optional enumeration fields don't allow for empty values

[tudoramariei]

If a table row has been set as an optional enumeration column, the only available options are the ones in the enumeration. Setting the field as null/empty is impossible.

Expected:

1. In a new or existing table, add a column
   • of type enumeration
   • with the required value option left unchecked
2. For a new/existing entry, select one of the enumeration options for the new column
3. Click again on that value and unset the value/set it to null/empty

Actual:

1. In a new or existing table, add a column
   • of type enumeration
   • with the required value option left unchecked
2. For a new/existing entry, select one of the enumeration options for the new column
3. Clicking again on that value there is no option to remove the current value

More details:
Image showing the column creation:

Image showing the options for an entry: