gotoByIdAsync() hangs in Excel online

We want to use Office.context.document.goToByIdAsync() to navigate to our inserted content. When calling this method we get a complete hang in Excel Online at the second(!) call:

"is working"... "is still working"... "is working"... "is still working"

(dark waiting panel in white letters and changing text)

In the console I got the following messages (>> are our logs):

>> calling now goToByIdAsync()
Agave.HostCall.IssueCall
SCRIPT5007: Unable to get property 'length' of undefined or null reference
Ewa.agave.js (2,68886)
>> calling now goToByIdAsync()
Agave.HostCall.IssueCall

To bring our Add In to market we now checking which hosts we are on and do NOT call this method till this is fixed.

Any better solutions?

For the office.js developer a exception occurs in Ewa.agave.js {g.FirstRow-=h.Headers.length;