Fix column picker errors

[dominik-zeglen]

I want to merge this change because it fixes console errors and clickaway listener.
Ref #384

Pull Request Checklist

1. All visible strings are translated with proper context.
2. All data-formatting is locale-aware (dates, numbers, and so on).
3. Translated strings are extracted to .pot file.
4. Number of API calls is optimized.
5. The changes are tested.
6. Type definitions are up to date.
7. Changes are mentioned in the changelog.

[codecov]

Codecov Report

Merging #393 into master will not change coverage by %.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #393   +/-   ##
=======================================
  Coverage   72.46%   72.46%           
=======================================
  Files         639      639           
  Lines        7118     7118           
  Branches     1184     1184           
=======================================
  Hits         5158     5158           
  Misses       1719     1719           
  Partials      241      241           

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