Accentuated characters with ^ are broken on Safari

With Safari 11.0:

On a french keyboard, the character is obtained by pressing the ^ key followed by the a key. The error occurs when space is pressed after entering the â.

Console errors:

[Error] TypeError: undefined is not an object (evaluating 'g.text')
	db (build.prod.js:4703:3297)
	processEventQueue (build.prod.js:4704:21470)
	handleTopLevel (build.prod.js:4704:23947)
	xb (build.prod.js:4703:4428)
	batchedUpdates (build.prod.js:4704:4634)
	batchedUpdates (build.prod.js:4704:19685)
	dispatchEvent (build.prod.js:4704:20551)
	dispatchEvent

[Error] TypeError: undefined is not an object (evaluating 'this.getDescendant(n).characters.get(e.startOffset-1).marks')
	value — build.prod.js:5039:11122
	(anonymous function) — build.prod.js:5073:716
	value — build.prod.js:5039:10248
	(anonymous function) — build.prod.js:5073:716
	hasMark — build.prod.js:841:1828
	renderMarkButton — build.prod.js:841:3601
	renderToolbar — build.prod.js:841:3132
	value — build.prod.js:841:5351
	u — build.prod.js:4703:19032
	o — build.prod.js:4704:817
	u — build.prod.js:4704:1327
	c — build.prod.js:4704:1795
	batchedUpdates — build.prod.js:4704:4657
	batchedUpdates — build.prod.js:4704:19685
	dispatchEvent — build.prod.js:4704:20551
	dispatchEvent
	s (build.prod.js:4704:3114)
	c (build.prod.js:4704:1883)
	batchedUpdates (build.prod.js:4704:4657)
	batchedUpdates (build.prod.js:4704:19685)
	dispatchEvent (build.prod.js:4704:20551)
	dispatchEvent

This might be related to the Safari IME issues, but I am not sure the â characters are using IME.

[ghost]

I’ve tried reproducing it with all the accented characters I know and the problem isn’t showing, even after hitting space. Currently using the latest 0.30.2, btw.

[ianstormtaylor]

I think @renchap said this was now fixed in the Slate slack channel.