Steam Free Roam Mode Not Working Correctly Anymore

Since the last update in 28th may, I noticed that Free Roam Mode has a bug, that several trains like the 4024 from Vorarlberg or Semmeringbahn aren't listed anymore, aswell as the 1116 from Semmeringbahn and liveries from the 403 I heard from someone else. I investigated and found out that the Railjet Mod caused the 1116 disappearing, though there hasn't been anything changed for this mod and it worked correclty with the 1116 before, so the Bug is clearly from the recent update, though I thougt there were no Core changes.

Hopefully this bug will be fixed soon because it's really going on my nerves since I use Free Roam a lot. For the 4024 I don't even know what's causing them to dissappear since I have no mod for it installed.

I hope that some others have this problem too aswell as a clue what the issue exactly is.