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.

Batman: The Ride disappears when zoomed out
In the vanilla RCB, due to lack of technical oversight and a script error ("Batman,ZommedOut=LowPoly" instead of "Batman,ZoomedOut=LowPoly") the coaster disappears when you zoom out too far, fixed with an expansion pack, all the console ports, the anniversary re-releases, the "RCB Deluxe" mod that usually adds coasters that they didn't have the rights too or didn't add in, and GOG-RCB, which is the GOG.com version of RCB meant to work on modern computers.