Hi guys,
We have a new issue that has recently occurred. This seems to happen in all updated versions of browsers. It was initially reported for Firefox 55. When trying to change vendors in the Vendors and Promotions area, if you click on a vendor name, you get nothing. You have to right-click and choose Properties to see it. This only brings up the Item Type properties and not the ability to edit the item itself.
https://www.screencast.com/t/9fQLcNuYO