WPML Language Selector not Displaying in Top Toolbar

To fix the issue kindly access your stylesheet style.css
(via Appearance > Editor or in the /karma/ folder) Open the file and look for the following code in line 1190:

.top-block .toolbar-left ul, .top-block .toolbar-right ul, #footer_bottom ul {     margin: 0;     padding: 0;     list-style: none;     float: left;     overflow: hidden; }

And remove overflow: hidden; from the code and save the file. You should be all good to go!