There is no need to use the ShapeDiver plugin for uploading models on ShapeDiver, and this bug is definitely not linked to that. It is also a bug that has never been experienced by any user before you, so it was either introduced very recently (in the past two weeks at most) or has something to do with the version of Rhino/Grasshopper that you are using.
We are looking into it, it will likely be fixed early next week.
UPDATE: one of our developers has identified that it is a rounding bug with real sliders that have 3 decimal places. If you limit them to 2 decimal places, it should be enough to avoid the issue, until we fix it.