Rule css:S4666: Unexpected duplicate selector "", first used

[schlundus]

It seems that the scanning of LESS files has an error regarding to rule css:S4666 when using "Mixins With Parentheses" in less like this .test() {

and selectors with variables like this @{foo}_bar {

they are all triggering a false positive "css:S4666: Unexpected duplicate selector "", first used ...."

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