Long time no type
When typing into an element, the element will be cleared automatically in case it is a
<input> element of type text, search, tel, url, email, password, number or datetime.
So, I'm wondering why this is not done in your case. Could you please check that the element you're trying to type into is such an element as stated above? If so, make sure you are using lastest version of XLT (v4.9.2).