My question is in regards to

You can see the question mark for the button is not working either. The same problem. renderDataTable does not know how to add the dependency for actionButton. So in general, I wouldn't call it a bug, but a feature DT package doesn't support yet.

For the question mark, even if is not a problem caused by spsComps, but we do have a solution from spsComps, adding the icon library:

    mainPanel(
        fluidRow(dataTableOutput('myTable')),
        spsDepend("pop-tip"),
        spsDepend("font-awesome")
    )