Not sure if this is an IOS8 bug, or Pythonista... There are forum posts indicating the continuous attribute used to work, however now (pythonista 1.5, ios 8.1.2 on ipad 2) continuous seems to just return the same thing as value, at least for Sliders created programatically. Setting continuous to False does nothing, the action is called continuously regardless.
The getter is definitely bugged, I just looked at the code, and for some reason, it really returns the value instead of the actual continuous attribute, so thanks for making me aware of that!
Setting continuous to False does seem to work properly though, or at least, I can't reproduce the problem. Could you show some code where you see this?
Ok, you are right, setting it does work, however the docs state that the default is False, when the default behavior seems to actually be True.