[BUG] Tram spawning only with one random trailer bugged outside the map

[Ravriely]

Describe the bug
Randomly, trams are spawning bugged (only one trailer) far far away from depot or stops/tracks and under the map itself !
Some can be located (by clicking on the gui), others can't and can't be removed using Advanced Vehicle Options or TM:PE.

To Reproduce
Steps to reproduce the behavior:

1. Create a tram line (bug happend more likely to occur on long tram lines (> 5km)
2. Run line for at least 20 seconds up to two minutes
3. Open the line overview panel
4. See trams composed of one trailer, not moving & not in the map

Game Logs
(This log is for a 2 hour play, that bug append many times during this session & I reproduced it voluntarily just before saving and quit game) :
output_log.txt

Screenshots

Additional context
Only mod I use who can break trams is Reverse Tram AI.
Hard to reproduce this bug on small lines or with "Use custom settings for this line" option, but still happend.

Thank you for your work and for considering my report!