Trailing spaces stripped from input after " in Admin UI

When modifying an attribute to include data with quotes ("), if there is a trailing space after the quote, this is lost in the PATCH call:

PATCH http://localhost:8080/openidm/managed/user/961dc3d6-b789-49ce-8d6f-49136c5f7172

[{"operation":"replace","field":"/description","value":"someData\"withSpace"}]

To reproduce:

1. Install IDM 6.5.x
2. Create a managed/user
3. Modify the Description field to contain a text with a trailing space, e.g. 'someData" withSpace'
4. View updated object and note the removal of the space after the quote