The Doom door types 26, 27 and 28 (DR blue, red and yellow door) in Vavoom doesn't behave quite like in the original Doom.
If you open them, you should also be able to close them before they autoclose after 4 seconds, or re-open them when they're closing. Just like the basic type 1 DR door.
However in Vavoom they act now like type 63 door (the remote SR door) After opening the door you can't affect it until it has autoclosed after 4 seconds.
Here's a test wad. Try to open and close those doors both in Vavoom and vanilla Doom if you can.