Force-directed graph returns [object Object] after first load

[us3r]

Make sure these boxes are checked before submitting your issue - thank you!

• I have checked the superset logs for python stacktraces and included it here as text if there are any.
• 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.

Superset version

0.29.0rc7

Expected results

Opening tabs with force-directed graph should show me loaded graph.

Actual results

After switching to the tab with force-directed graph I have sth like this:

I need to force refresh to get the graph.

Steps to reproduce

• Create tabs.
• Add to the second tab force-directed graph.
• Open dashboard, switch to the tab with force-directed graphs.

[mistercrunch]

Fixed in master

[dsewell]

I'm getting the same issue with the latest version 0.35.2 and master.