Inconsistent $replace result

[ameshkov]

Read the details here:
AdguardTeam/AdguardForAndroid#878

[adbuker]

character escapes are not recognizes in substitutions
https://msdn.microsoft.com/en-us/library/xwewhkd1(v=vs.110).aspx see Note
review ADWin/review/ADWIN-CR-72