I wanted to build a motorcycle coaster and was only able to choose 2 vehicles (this is a bug, too, I think). Then I played around with the platform (Stationsplattform), make it longer/shorter, place the entry and exit at other places. Then, when I wanted to test the coaster, an error occurred, saying I have build not entry and exit and the build dialog let me build a second entry and exit. See the screenshots.
Steps to reproduce:
Not sure. I have saved the game, when in the building dialog and builded the first platform. Maybe this is the reason.
Screenshots / Video:
First tile of coaster builded: Ivory Towers.txt
Whole coaster but broken: Ivory Towers2.txt
Thank you very much for making RCT available on Linux and keeping it alive!