Deprecation warning seen with moment library in console

[rashmivkulkarni]

Kibana version: 6.2.0 BC1

Elasticsearch version: 6.2.0BC1

Server OS version: Ubuntu 16

Browser version: Chrome

Original install method (e.g. download page, yum, from source, etc.): BC1 builds of 6.2.0

Description of the problem including expected versus actual behavior: Add couple of visualizations to the dashboard on 6.2.0 BC1 and I see the following message int he console . Just logging it here:
Console error:

vendors.bundle.js?v=16537:134 Deprecation warning: moment construction falls back to js Date. This is discouraged and will be removed in upcoming major release. Please refer to https://github.com/moment/moment/issues/1407 for more info.
Arguments: [object Object]
Error
    at Function.createFromInputFallback (https://localhost:5601/bundles/vendors.bundle.js?v=16537:134:2680)
    at oa (https://localhost:5601/bundles/vendors.bundle.js?v=16537:134:10815)
    at Ia (https://localhost:5601/bundles/vendors.bundle.js?v=16537:134:14713)
    at Ha (https://localhost:5601/bundles/vendors.bundle.js?v=16537:134:14574)
    at Ga (https://localhost:5601/bundles/vendors.bundle.js?v=16537:134:14294)
    at Ja (https://localhost:5601/bundles/vendors.bundle.js?v=16537:134:15026)
    at Ka (https://localhost:5601/bundles/vendors.bundle.js?v=16537:134:15060)
    at a (https://localhost:5601/bundles/vendors.bundle.js?v=16537:134:191)
    at DashboardStateManager.value (https://localhost:5601/bundles/commons.bundle.js?v=16537:51:73599)
    at controller (https://localhost:5601/bundles/commons.bundle.js?v=16537:51:41905)
    at Object.invoke (https://localhost:5601/bundles/vendors.bundle.js?v=16537:123:33212)
    at extend.instance (https://localhost:5601/bundles/vendors.bundle.js?v=16537:123:91580)
    at nodeLinkFn (https://localhost:5601/bundles/vendors.bundle.js?v=16537:123:61879)
    at compositeLinkFn (https://localhost:5601/bundles/vendors.bundle.js?v=16537:123:52333)
    at https://localhost:5601/bundles/vendors.bundle.js?v=16537:123:50989
    at Object.link (https://localhost:5601/bundles/vendors.bundle.js?v=16537:139:6986)

cc / @thomasneirynck

[ThomThomson]

Double checked this, and this warning is still present in the current version of Kibana. Likely we can get around this warning by updating our implementation of areTimesEqual.