Could it be, that the newest developer release of Girder4 has problems with states ? I tried to create a toggle action and was not able to set states correctly. When set to a new value, saving is no longer possible. Girder asks if to save changes, but does not do it actually. I also tried to change an existing (and always working) toggle action with no success, the same behavior here.
I also tried to create a new GML with only the toggle action (different states), no success too.