Link in text goes to new tab/window in Upfront

When using a Text Draggable Element in Upfront, links are always given the default value of blank
opening a new tab/window.

I've tried linking to the page/post and via url but in each case, I cannot choose the 'self' opton. When I try to, the link dialog disappears.. and you don't get a chance to click the OK button.

Is anyone else experiencing this?