I'm happy that I'm not the only one who closes tab when something uninvited pops up. At the same time I wouldn't agree it's a chatbot-related issue. It's rather poor UX design.

I'm realist and IMO chatbots are not ready for handling pre-sales or sophisticated support cases. However I see a huge potential in dealing with conversations that follow known scheme. Let it be cinema reservation or flight change - they look very similar in most cases. That's where chatbots might come in.

For example in my company (LiveChat) we're experimenting with handling app onboarding by chatbot. Results are very promising :-)