I found one bug.
- make some engine
- go to testing page and to testing mode
- start engine ja rev it
- go to some other page (fex. change the block material on bottom end page)
- get back to testing
Now the diagram which shows the airflow etc has been disappeared. You can get it back by clicking the arrow on the left side of the screen.
Not a big bug but it gets annoying if you try to test best parts for certain applications and have always to click the arrow…