Cannot add a new page to canvas workpad

[bhavyarm]

Kibana version: 7.6.0 BC2

Elasticsearch version: 7.6.0 BC2

Server OS version: darwin_x86_64

Browser version: chrome latest

Browser OS version: OS X

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

Describe the bug: User cannot add a new page to canvas workpad.

Steps to reproduce:

1. Open any sample data workpad
2. Click on page and try to add a new page
3. It doesn't work

Screenshots (if relevant):

Errors in browser console (if relevant):

Uncaught Error: You may not call store.getState() while the reducer is executing. The reducer has already received the state as an argument. Pass it down from the top reducer instead of reading it from the store.
    at getState (:5601/built_assets/dlls/vendors_2.bundle.dll.js:51)
    at :5601/bundles/canvas.bundle.js:3
    at :5601/bundles/canvas.bundle.js:3
    at :5601/built_assets/dlls/vendors_2.bundle.dll.js:196
    at Object.enableAutoplay (:5601/built_assets/dlls/vendors_2.bundle.dll.js:51)
    at :5601/bundles/canvas.bundle.js:3
    at execOnMatch (:5601/bundles/canvas.bundle.js:3)
    at :5601/bundles/canvas.bundle.js:3
    at :5601/bundles/canvas.bundle.js:3
    at Array.forEach (<anonymous>)
:5601/bundles/commons.bundle.js:3 Uncaught TypeError: Cannot read property 'apply' of null
    at window.onerror (:5601/bundles/commons.bundle.js:3)

[elasticmachine]

Pinging @elastic/kibana-canvas (Team:Canvas)

[crob611]

This issue appears to exist in the 7.5.1 release as well.

It appears to only happen if autoRefresh, or autoPlay is enabled, so if a work around is needed in the meantime, just make sure both of those options are disabled.