That's right. It doesn't work in 2018. If you must use deprecated server behavior panels for a legacy site (I don't recommend it for that either) you'll need to revert to an older version of DW -- CS6 or 2015.
Thank you very much for your quick response. I did need this information and it worked.
Next time I'll ask which "Behaviors" they're talking about .
Try switching to Design view of document in DW and then try accessing Behaviors panel.
Behaviors panel is not available in Live View.
Thank you very much! That did work! I appreciate your quick reply.