Codemirror freezes when I write too many lines

It freezes when I write about 500 lines. In console I have an error: ‘TypeError: child.chunkSize is not a function’. I tried to paste many lines in the example editor on and even 10000 was ok. Does anybody have any thoughts about this problem?

Sounds like you’re using version 5.15.0, which has a bug to this effect. Upgrade to 5.15.2 or 5.16.0 to solve it.

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