Testcafe clicks on a Button customised to be a dropdown does not retrive dropdown content

I am supposed to test a button that is customized to work like a dropdown using testcafe, the element is successfully clicked but the dropdown content is not displayed. My suspicion is this behavior is as a result of the dropdown being a custom button and not a select, I might be wrong thou. Does testcafe treat custom elements that should act as select the same way it treats the select tag? If yes are there any suggestions on how to test a customs button that is designed to be a dropdown in testcafe?