I've been working on a custom KDEN file, and I've ran into an error when developing the arrival routes. For some reason, all STARs have a floor where aircraft can only descend to 11368. I don't get why this value -- it's not any common altitude above the airport (i.e. not 5000 above) or even a number below the playing ceiling. Here is the link to the file: https://gist.github.com/RainbowLegend/cdc58a4a9045dd96c20e773e4b34e761. I've also gotten this reproduced by one other person. It happens on all STARs -- even those with an altitude restriction below 11000.