Is anyone else's dynamic data button not working in the editor?

[Suri.M]

You are brave. See this thread:

New Expression composer

Don’t try it on a mission-critical project! I almost had a heart attack thinking that it corrupted my project. As soon as I turned it on. The number of errors in my projects just shoots up, and it starts to give me erroneous errors about missing popups with some random names. The search element in the design starts showing double instances of popups.