I have been to one JW funeral in my post-JW life, my mom's. My mom waited to become a JW until she was too old and sickly to participate. But she had great social skills, and, to her credit, she did not shun me. Some of the JW's were friendly to me. I was with my non-JW cousin Connie, and one of the JW's recognized her from where she worked. The JW spoke to Connie and did not entirely ignore me. I was shunned by one JW who I had known for many years. I said something to the effect that her heart certainly must be full of Jesus (after the funeral), and my non-JW niece laughed. Word must have gotten back to her because she did not shun me on another occasion after that. After all, two of her children had been DF'd.
The above-stated scenario is not typical!