When I run jupiter notebook as "run selected steps" it is show as ready and thats it - no success. Not very useful. Or maybe its not being run at all

That is odd. Are you sure you selected the step your are trying to run? Alternatively, does the selected step (with a Jupyter Notebook as its file) depend on other selected steps? Those steps need to complete first before the other can run. Although in that case the step should be in "Pending".

It resolved itself when i added step now. Might be connected that i renamed notebook file and then re-attached it, maybe it didnt pick it up. I guess minor case, sorry

We appreciate you making us aware of possible bugs, please continue 😍 . Luckily this issue resolved itself 👍