Surely if you click it and it disappears you can't make it reappear by clicking it because it's not raycasting...
0 [c] onActivate -> Self -> setRendering [ ]
1 [c] onActivate -> Self -> setColliding [ ]
2 [c] onActivate -> Client -> centerPrint ["Disappeared.",1]
3 [ ] onActivate -> Self -> setRendering [c]
4 [ ] onActivate -> Self -> setColliding [c]
5 [ ] onActivate -> Client -> centerPrint ["Reappeared.",1]
6 [c] onActivate -> Self -> toggleEventEnabled ["0 1 2 3 4 5"]