Thank you for bringing this to our attention. I have been able to reproduce this in 9.5.3. I have notified our development team and will keep you updated on any changes that arise in the future.

The problem seems to come up once it is changed. It is automatically at zero and seems to work with the rule “If blank, the text will auto-expand to its content”. If I then put it to 3, it’ll work at 3. But then if I attempt to return it to zero so that it automatically adjusts, it fails. 

In the time being, if you need a quick workaround, if you go into the XML, find the correct field id, and delete the  
displayrows=“3”
section, then it’ll work by auto-expansion.

Have a jolly day!