Dash callback Output value clears the persistence of the dcc components

[petar-pejovic]

Thanks for linking similar questions @antony.milne.

One of the comments in the first thread you sent seems to pinpoint the core issue in the source code.

Dropdown persistence does not work when its value is filled from a callback

I’ve had the same issue as @chander. @adamschroeder I tried running your example but it didn’t seem to fix the issue as far as I could tell? As far as I can tell from the dash-renderer source, changes to a components props are recorded for persistence purposes when the component calls setProps. This is how components let dash-renderer know that something has changed and that it should trigger the relevant callbacks. But setProps is only called if a component changes its own props, not if it rec…

I wonder if Dash sees this as a bug? If so, is there a plan to fix it, and would any assistance be helpful?