Irale door missing sound bug

The linedef special which is used on Irale's shop door in Strife is the only type of locked door special in the game which does not cause the player to emit a grunt sound when he tries to press it without the requisite key, in this case having obtained the necessary permission token from Macil. In light of the fact that there are several dozen other types of locked doors which require everything from ordinary keys to severed hands to the Chalice to specific pieces of the Sigil to open, and all of them cause a sound to be emitted except this one, it is likely that this was an unintentional glitch.