Rudder

To reproduce

• Go to technique editor
• Create a technique
• Go to directives menu, instantiate it
• Go back to technique editor

Technique diverges
This Technique has been updated while you were away. Do you want to update it to the latest version, or keep your changes ?
If you decide to keep your changes and save it, your version will replace the current one. However you will still have the choice to update it before saving.

Keep changes / Update

Should not happen, and it's hard to tell which option does more damage.
In either case you end up in that last technique instead of the basic view with no technique selected.