QuoteId field displayed with no value

When creating a new quote, the field quoteId is displayed even though its value is "null".

Step to reproduce :

• Go to the "Order" component
• Go on the "Quotes" tab
• Click on create a new quote
• See the "quoteId" field displaying no value
  (quick link : https://localhost:8443/ordermgr/control/EditQuote)

Expected behaviour :
The field "quoteId" should not appear when creating a new Quote