[IME] Failed to execute 'removeChild' on 'Node'

[pizn]

The current behavior?

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macOS + Chrome 60

1. Select two lines
2. Use IME input some word
3. Enter and the console will throw error

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with #854

[chemzqm]

#885 should fix this, instead of #880 , I hope it could get merged.

[Soreine]

Can reproduce using dead keys, on Chrome (not Firefox).

1. Switch to a French keyboard layout
2. Type twice the ` character at the start of the document (under the \ key on Mac US layouts).
3. Slate crashes

[Soreine]

Possibly the same issue: #1229

[ianstormtaylor]

Closing in favor of #2368.