NumberFormatException with "XXX" format, when time zone is "+0900"

[irgaly]

At klock version 1.1.1, this code throws NumberFormatException. Is this expected behvior ?

DateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSXXX").parse("2019-04-15T17:28:46.862+0900")

java.lang.NumberFormatException: For input string: "862+0900"

Note: the format yyyy-MM-dd'T'HH:mm:ss.SSSZ works fine for +0900 , and yyyy-MM-dd'T'HH:mm:ss.SSSXXX works fine for +09:00.

→ yyyy-MM-dd'T'HH:mm:ss.SSSZ is no Exception, but parsed that time as UTC, so it's also wrong result.