Oracle inconsistent datatypes error when using user suggest for multiple users

Reproduction steps:

• Create several users on a wiki
• Create a new app within minutes
• Insert a user field and edit it to allow multiple users
• Create a new entry in that new app
• Type some characters (e.g. "foo") in the suggester for users

Expected result:

• the suggester should provide users matching what is typed

Obtained result:

• only a subset of users is displayed when focusing on the suggester, typing values in it doesn't refresh the values. When checking the requests, a 500 error appears for the values requested and the body contains following error:

  org.xwiki.query.QueryException: Exception while executing query. Query statement = [select prop.textValue, count(*) as unfilterable0 from BaseObject as obj, StringListProperty as prop where obj.className = :className and obj.name <> :templateName and prop.id.id = obj.id and prop.id.name = :propertyName group by prop.textValue order by count(*) desc]
  OracleDatabaseException: ORA-00932: inconsistent datatypes: expected - got CLOB