Crash: null is not an object (evaluating '_this.scrollViewRef.props)

[koke]

While testing #1361 I came across one crash that seems unrelated to it (also reproduced on current develop).

To reproduce:

• Create a new post
• Insert an image and upload a photo from the device
• When it uploads, insert a media-text block
• Remove both blocks
• Dismiss the keyboard (or insert a video block)
• Crash

[koke]

When I delete the media-text block, I'm seeing this in Chrome devtools:

TypeError: Cannot read property 'name' of null
    at index.native.js:150
    at Object.mapSelect [as current] (index.js:54)
    at onStoreChange (index.js:127)
    at index.js:154
    at registry.js:56
    at Array.forEach (<anonymous>)
    at globalListener (registry.js:56)
    at index.js:85
    at dispatch (createStore.js:186)
    at index.js:24

[koke]

The crash happens on KeyboardAwareFlatList. There's a setTimeout and when it executes, this.scrollViewRef is null

[pinarol]

Makes sense, before the inner blocks there were no case like scrollViewRef being null because the only KeyboardAwareFlatList was the main one.