Custom image browser also shows browse button on link tab

When setting the property

config.filebrowserImageBrowseUrl = '/mycustombrowser.jsp';

the "Browse Server" button is also displayed for the Link-tab. This should in my opinion not happen.

Setting the config.filebrowserImageBrowseLinkUrl to blanks does not resolve the issue and the "Browse Server" button on the Link-tab points to the same URL as the filebrowserImageBrowseUrl.