Krzysztof Kotlarek 38c3a44bf9
FIX: return empty array when no parent for range (#14386)
If parent element for range does not exists, range calculator should
return empty array. In that case duration calculations will stop because
of:

```
if (_rangeElements(element).length === 2) {
  opts.duration = _calculateDuration(element);
}
```
2021-09-20 16:03:02 +10:00
..