Insights trying to adding a filter crashes

[tiina303]

Bug description

Trying to add a filter crashes about every 2nd time after clicking on filters and then add filter.
Related user report with a video: https://posthogusers.slack.com/archives/CT7HXDEG3/p1623119814156600?thread_ts=1623043305.137300&cid=CT7HXDEG3

Expected behavior

Page loads fine and we can add a filter.

How to reproduce

1. In the insights tab if we click on the filter icon (1)
2. then "add filter" (2)
3. if it didn't error, click (1) and restart from step 1. (I sometimes needed to do this 3 times, but it repros pretty consistently).

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Environment

• PostHog Cloud
• self-hosted PostHog, version/commit: please provide

Additional context

The errors I saw in developer tools that I believe are related:

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[macobo]

#4617

[mariusandra]

@tiina303 can you confirm if it's fixed for you after #4617 got merged and then close this issue?

[tiina303]

No it's not fixed, I was able to repro it just now on app.posthog.com & the error is a bit different:

cc @samwinslow