bsPopover (tooltip) not working in shinyapps.io

[matt-sd-watson]

I have rendered a bsPopover element that works nicely with a clickable tooltip in a shiny app. It works as expected locally, but does not function in shinyapps.io. The simplified code is here:

fluidRow(column(5, div(
                id = 'q1_div',
                h4(
                  'Input scRNA-seq',
                  bsButton(
                    inputId = 'q1_input',
                    label = '',
                    icon = icon(name = 'question'),
                    style = 'info',
                    size = 'extra-small'
                  )
                ),
                bsPopover(
                  id = 'q1_input',
                  title = 'Input scRNA-seq file',
                  content = 'upload SCE',
                  placement = 'right',
                  trigger = 'focus')

Is there any explanation for why popovers might work locally but not in shinyapps?