Tabs not showing up in IE

Hi there, can you please check why the vertical tabs are showing up as a vertical accordion on this page? It’s only happening in IE but not Firefox or Chrome.

https://www.reynoldsrealtyadvisors.com/properties-for-rent/multifamily-california/

Oddly, I have the same exact content on a test server and it looks fine in all browsers. You can view it here:

https://judyasman.com/reynolds_test_site/?page_id=659

Thank you!~

https://www.ads-software.com/plugins/wp-ui/