After SU12, toolbar doesn´t work anymore after editing in the scenery editor

After SU12, after editing in the scenery editor and returning to fly and test the new scenery, the toolbar still appears but clicking on the buttons doesn´t have any effect and addons like Flow don´t work anymore. Anybody else with the same problem? Solutions or workarounds?

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I noticed the same thing here.

It is a known issue

Usually happens when you have in community the same package you are working on (which is btw a bad habit)

No other known workaround at the moment

For me the problem occurred only after SU12. Before that I was quite impressed how well it worked (and still works) to edit scenery from projects in the community folder and see the results immediately.