Open tab button does nothing

When editing a reformat transformation, there is an “Open tab” button. It used to work, but in the current version it simply does nothing. I have tried with both community and trial version.

Hello Ogalimov,
this feature has been present in the older versions of CloverETL and I can confirm that it is available in the most recent 4.9.0 production version as well. As per our documentation, the way this feature is supposed to work is that if you click on the ‘Open tab’ button a new tab with the CTL source code of the transformation will be opened in the Graph Editor. After closing the Transform Editor and Reformat dialog window, you should see the new tab opened on the same level as Graph and Source (see the screenshots in the documentation).
If this is not the way it works on your end, please let me know which CloverETL version you are using.
Kind regards,