RollerCoasterBuilder/Glitches

Flat-screen input delay
On modern monitors, the input of building coasters delays by 1 second, which is problematic for speedrunners, in the 2011 20th Anniversary Special Edition re-release, before the game even begins, there is a warning that this may not be compatible with modern desktops and that you should go to the thrift store and buy a CRT.

Too Many Colors On POVs
If you use entirely different color schemes on 5 coasters or more in the same viewing distance, the POV view will cause the game to crash, fixed in RCB II where colors will change automatically to either green (grass) or black (other terrain) and RCB III and onwards due to technical advancements.