Bug in separator for throwable

[Alexey Zavizionov]

I want to separate stacktrace with date at each line, but with separator i
got it in one line with print separator as is, even without new line..
Seems to be a bug?

            <PatternLayout>
                <pattern>%d{HH:mm:ss.SSS} : %m [] %throwable{separator(%n%d)}
%n</pattern>
            </PatternLayout>

\n also don't work in it.

I want to use %d in it.
Please try to fix the with it.
org.apache.logging.log4j.core.pattern.ThrowablePatternConverter.formatOption(Throwable,
StringBuilder)