Editing a filter added via the + loupe, then editing it raises an exception

[webmat]

Kibana version:

Version: 7.0.0-SNAPSHOT
Build: 22452

Elasticsearch version:

number: "7.0.0-SNAPSHOT",
build_flavor: "default",
build_type: "tar",
build_hash: "638ba4a",
build_date: "2019-02-05T13:49:29.097757Z",
build_snapshot: true,
lucene_version: "8.0.0",
minimum_wire_compatibility_version: "6.7.0",
minimum_index_compatibility_version: "6.0.0-beta1"

Server OS version:

Docker image used by Beats CI

Browser version:

Google Chrome | 71.0.3578.98 (Official Build) (64-bit)
Revision | 15234034d19b85dcd9a03b164ae89d04145d8368-refs/branch-heads/3578@{#897}
JavaScript | V8 7.1.302.31

Browser OS version:

(say in a suave voice) Mojave!
10.14.2 (18C54)

Original install method (e.g. download page, yum, from source, etc.):

Beats Docker CI

Describe the bug:

Adding a filter on a field of datatype long via the loupe, then editing it leads to an exception.

Steps to reproduce:

1. Find a dataset with long fields in Discover
2. Click the (+) loupe to filter on a field of datatype long
3. Edit the filter

Expected behavior:

The edit UI should show up.

Screenshots (if relevant):

Instead, this error is shown:

Errors in browser console (if relevant):

Uncaught TypeError: searchValue.toLowerCase is not a function (http://localhost:5601/built_assets/dlls/vendors.bundle.dll.js:203)
Version: 7.0.0-SNAPSHOT
Build: 22452
Error: Uncaught TypeError: searchValue.toLowerCase is not a function (http://localhost:5601/built_assets/dlls/vendors.bundle.dll.js:203)
    at window.onerror (http://localhost:5601/bundles/commons.bundle.js:3:1032352)

Provide logs and/or server output (if relevant):

Any additional context:

It's important to do this on a long field. Text fields don't have this problem.

[elasticmachine]

Pinging @elastic/kibana-app

[dkngyn]

searchValue.toLowerCase references to EuiComboBox in this case I believe
Possible fix is to stringify the label in phrase_value_input.tsx#L71 where getLabel={option => String(option)}. It seems like it was mishandled? The same for phrases_values_input.tsx#L51.

[kertal]

dear @dkngyn, sounds like a valid approach to solve it, problem is, I can't reproduce it, created a dataset with long value, added a filter, I could edit it. in 7.0.0, 7.2.0, 7.3.1. So I'd need more infos about how the filter is created? thx a lot!

[webmat]

I tried it on 7.3.1, and indeed it seems like it's fine now :-)