### Selection infinite loop [#629](https://github.com/ckeditor/ckeditor5-engine/issues/629)
Before testing open console.
1. Select part of text.
2. Click bold or press ctrl + b.
3. There should be no errors or warnings in console.
1. Put caret somewhere in text.
2. Press left arrow, then right arrow.
3. Repeat as fast as you can for 2-3 seconds.
4. There should be no errors or warnings in console.