headland turns not working with multiple tools

I have used the multiple tools function to cultivate one of my fields using 4 tractors (6m each). everything was just fine until they started doing the headlands. In every headland turn, they start turning in a circle or, rarely, in a back and forth motion for a long time until I stop them.
The headland turns, that have been discussed in issues #3255 and #3290 and have been fixed, work pretty well when just one tool is used, but they do not work with multiple tools.

here is the savegame:
savegame1.zip

course:

courseStorage0012.zip

and map download link:

http://www.modhub.us/farming-simulator-2019-mods/flusstal-dedicated-tested-2-0-0-6/

in case you need them.

[Messy71]

@mehdinasef you can also upload a log with the debug channes ( 12 , 14, optional 13).It would be very helpful for the devs if you align the tractors 5-6 waypoints back from the waypoint in question (where the problem happens) , this way they just load the savegame and hit drive for each tractor. This makes things quicker and finding the problem and solution a lot faster.
Also the title of the issue is a bit misleading , instead of multiple tools (multiple implements attached to a tractor) you should change it to multiple tractors.

I'll do that tomorrow, I'm quite busy right now.

[MoslessNeo]

I have this problem on my maps, on the plots where one of the edges is irregular. If I use 2 or more vehicles, the first one can follow the course, but the second is totally lost.

here is the log with the debug channels 12, 13 and 14 and the savegame with the tractors aligned:

savegame&log.zip

I have put every tractor in one corner because this occurs in every turn.
I also noticed that the tractor that has the lane offset set to right 1 makes the turn easily.

[pvaiko]

Can't reproduce this on Ravenport.

I need a savegame and courses on an official map. I'm not able to download and install any random map you happen to see a problem on.

I have created a course with the same settings on ravenport, field 12:

ravenportturntest.zip

hope it helps.

I also noticed that the tractor that has the lane offset set to right 1 makes the turn easily.

same thing happens this time.