I asked the staff back in March of 2018 about this bug several times, they said:
"I've informed our developers about this issue from you, but I guess they know that very well
As I know, it's not easy problem and requires more time to fix it. Not months.
You can discuss that "problem" on forums.eagle.ru"
"We have problems with track recording regardless of the specific aircrafts.We know about this and working to solve this problem."
"It is a common problem of DCS World.
Please excuse us for inconvenience.
We know about this and working to solve it"
so I guess due to it's low priority it's not going to be fixed.
Usually the modules with multicrew are affected, like the F-14 or the Mi-24, but last time I tried, the Mi-8 was also completely broken for me.