PR #10970 breaks the filter box control

When you pull #10970 and run docker-compose up --build and go to Filter Box visualization in the control panel, the filter configuration popup will not open.

Expected results

Filter configuration popup to open.

Actual results

Filter configuration popup does not open.

Screenshots

How to reproduce the bug

1. Clone incubator-superset
2. git reset --hard e4e78b66fa82acbe8e5bc425d697ff11b4a0cc3f
3. docker-compose up --build
4. Wait for the superset_init to complete
5. Open http://localhost:8088
6. Go to data > datasets > birth_names
7. Change the visualization type to filter box
8. Under Filters configuration, click (+) icon to add a filter
9. Try to edit the filter
10. See browser console producing

Environment

(please complete the following information):

• superset version: e4e78b66fa82acbe8e5bc425d697ff11b4a0cc3f
• python version: Python 2.7.17
• node.js version: v12.18.3
• npm version: 6.14.6

Checklist

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.

Additional context

The filter box plugin works with the previous commit to master 41dfcd4834cb0db76d8aeffb28f55b90d79dccd6

[mistercrunch]

+1 , thanks @codepic !

[rusackas]

I’ve said it before, and I’ll say it again. I really appreciate your thorough bug reports with the repro steps.