INOP engine still produces smoke trail in-flight

[Raven (Elysian Angel)]

Hello,

This is obviously a very low-priority item, but today I did some aerobatics when my right engine decided to quit, and in fly-by view (F3) I noticed 2 very distinct smoke trails, instead of one.
This happened after a fairly long test flight, so the track is also long (1 hour) and too large to share directly. Hence this link:
https://drive.google.com/file/d/1fFcCKIh-nblDFK6W6Lv8kzYZNnflfsoe/view?usp=sharing

 

Thanks.