This problem caused datepicker, progress, and bookmarking dialogs not o work, so we test them all here.
More information can be found on this PR: https://github.com/rstudio/shiny/pull/2361
- Selecting a date in the time period on the left should work correctly.
- Clicking 'Show Progress' button should display a progress bar at the bottom right of the page.
- Clicking 'Bookmark…' button should show a modal that the bookmark link can be copied from.