Important: Be sure to run manual test with the --debug false flag. Otherwise errors won't be rethrown by the CKEditorError.rethrowUnexpectedError() method.

1. Type 1 in the first editor. Only the first editor should crash and be restarted. The error should be logged in the console.

2. Type 1 in the second editor. Only the second editor should crash and be restarted. The error should be logged in the console.

3. Click Simulate a random error No editor should be restarted.

4. Refresh page and quickly type 1 in the first editor 4 times. After the last error the editor should be crashed and it should not restart.

5. Refresh page and slowly (slower than 1 per 5 seconds) type 1 in the first editor 4 times. After the last error the editor should be restarted and it should still work.