JNR 70 Series causing Error Message when reversing

[jdenm8]

Not sure if this is still checked, but I'll give it a shot.

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Describe the bug:
JNR 70 Series EMU may cause an error when reversing direction.

1. What is the bug/issue?
   I receive the below error message when a Class 70 EMU reverses within a station:
   Behaviour of NewGRF 'JP+ Multiple Units v0.5.5' is likely to cause desyncs and/or crashes
It changed vehicle capacity for '70 Series (EMU)' when not inside a depot or refitting
   The train then will either halt and complain about No Power, or crawl at sub-2km/h. Running Cost is also set to 0, and Max Speed to 65,917km/h. If it is crawling, then sending the vehicle to a depot does reset it to the correct values, and it will function correctly until it reverses direction again.

2. How did you make the bug/issue happen?
   Reverse a 70 Series in a station. Occasionally it does work, I did have a 5+5 set reverse correctly, but was unable to reproduce it while testing.
   It appears to happen regardless of refit.
   I do not recall making any changes to the default Parameters

3. What would fix the bug?
   Not causing this error when reversing.

Screenshots:

 

 

 

OpenTTD version:
15.3 Steam