I am seeing the error "Uncaught TypeError: arrowInnerELe is null" when attempting to move a node with a tooltip and the 'showTipPointer' property disabled.
Reproduce steps:
Create diagram node with a tooltip and the 'showTipPointer' property set to 'false'
Attempt to move the node on the diagram
I attached a screenshot of the stack trace. Looking at the code, it seems to be accessing the arrow DOM element without checking if it exists.