Locomotive road numbers changing

I just wanted to see if anyone else has this problem. When I'm running the locomotives in-game, they will often have the road number suddenly change depending on the angle I'm looking at them from:
First, it's #249:

And now it's #219

I'm not sure what could be causing this. I already looked at the dcsv files for the autonumbering and I couldn't see anything wrong with them.
First, it's #249:

And now it's #219

I'm not sure what could be causing this. I already looked at the dcsv files for the autonumbering and I couldn't see anything wrong with them.