Thanks for the feedback Maor. As Mike has said, to clear white aircraft you need to untick 'allow substitutes' in the setting menu. See P9.
Not sure about aircraft stopping - that may be down to the airport. Ideally, if you could submit a ticket to support with the airport, aircraft type, livery, time in sim etc we can look into it.
NB that might be caused by using K to shift time, but support would need to check either way.
Blur trail - will ask about that. Not seen that mentioned in testing.