Anokfero made an EXT gate for me and after locking the sign i've been unable to add people to allow them to open it also. Under /cinfo it says they've been added with permissions, but I remain the only one able to open the gate.
I've done a quick test with a player I'm not sure is fully trusthworthy. Then retested with Sizsizma10. Sign with no protections: Accessable. Sign with /cprivate: Denied. Sign with /cmodify sizsizma10: Denied. /cinfo states: Access Control list (1) sizsizma10 (player) EXT permissions bug still present.