A while ago we conducted a survey on this feature and I want to share what we have done since then. Based on the user comments we received from the blog and other sources we decided to disable this feature by default, because it affected the Model Editor performance while being rarely used. Since there were also users who used from time to time, we also provided the capability to enable it via the button in the toolbar (available at both design and run time).


We hope that this behavior will meet the needs of the majority of our users and look forward to hearing from you in comments.