As explained, many times already on the forum, whenever you indicate a problem, ALWAYS include ALL the following information:
- The airplane used
- The airport used. If it's not default, clearly indicate which scenery has been used.
- The gate used
- The exact sequence of operation.
You only indicated the airplane, please add all the missing details and, possibly, a reproduction case on a default airport. If the problem happens only on an add-on airport, indicate the scenery and the AFCAD in use.