Callback does not trigger in a multi-page Dash App

[austin]

I ran into a similar problem when building a multi-tab Dash App (so this may be related to your experience). The static app rendered just fine but none of the callbacks were operational (or just extremely slow).

Simple callback very slow when inside a tab

I personally agree, which is why I’ve made it the secondary option and included the disclaimers below the example. Perhaps the disclaimers could be more obvious. However, some folks find putting content into a callback tedious, see for example: https://github.com/plotly/dash-core-components/pull/213#issuecomment-400090475