Closing all tabs on SQL Lab leaves the screen blank

[villebro]

When closing all tabs on SQL Lab, the whole screen goes blank due to there not being a single open tab left.

How to reproduce the bug

1. Go to SQL Lab
2. Close all tabs
3. Notice how the whole screen goes blank

Expected results

A new empty tab should be opened automatically. The same can now be achieved by clicking on SQL Lab in the menu, which correctly opens an empty tab.

Actual results

The screen goes blank

Video

close-sqllab-tab.mp4

Checklist

Make sure to follow these steps before submitting your issue - thank you!

• I have reproduced the issue with at least the latest released version of superset.
• I have checked the issue tracker for the same issue and I haven't found one similar.

Additional context

Add any other context about the problem here.

[Yahyakiani]

@villebro @junlincc Could I have this issue ? Furthermore, what is the expected solution for this problem ? Automatically open an empty SQL tab if tabs count falls to zero upon closing ?

[nytai]

@Yahyakiani Doesn't seem like anyone has taken it, go for it! Yes either recreating a new empty tab or just raising an error that the last tab cannot be closed should be enough

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions. For admin, please label this issue .pinned to prevent stale bot from closing the issue.

[yousoph]

#18817