LESS: Variable in selector causes parsing error

[Ciantic]

These are valid LESS (1.4.0):

@myelement: ~"li";
@{myelement} { // This line fails in editor
  color: red,
}

@count: 4;
> li:nth-child(@{count}n+1) { // This line fails in editor
    clear: both;
}

Both incorrectly gives me error in the editor. It is especially problematic cause the whole editor fails to work correctly after this false-positive.