Board Thread:Support Requests - Getting Technical/@comment-16319418-20170926155823/@comment-27958705-20170929145619

tabber uses method unsupported by ie11, so it have to be updated to ie9-11 support. or u can use edge instead. also, check Supported browsers page.

it is possible to create client-side patch to make tabber working, but it will kinda clumsy solution. along with needless and worthless.