Can't use buttons within @st.experimental_dialog?

[Goyo]

A staff member just confirmed that this is not supported (yet).

St.experimental dialog box on callback is not running for second time

Using fragments in callbacks is not supported. Since dialogs are just an extension of fragments, dialogs can’t be used in callbacks at this time. (This will be clarified in documentation with the next release.) As part of the work to de-experimentalize fragments, this is being investigated.