Switch texture freezes
May be related to Bug 824, however the bug was discovered on a non-instant lift. Under rare occasions, when bug pseudo-824 happens, the switch that is responsible for handling a given lift freezes its texture, showing to be always pressed. The switch still works normally, but its texture remains frozen no matter if it is actually pressed or not.
A previously sent attachment shows this behavior: http://odamex.net/bugs/attachment.cgi?id=504