Github user cakofony commented on the issue:
https://github.com/apache/logging-log4j2/pull/115
@garydgregory The change in this PR does not cause the failure, the change
that was merged instead introduced the bug.
I have a repo here which I've used to reproduce the issue:
https://github.com/cakofony/log4j2-composite-config-repro
I'm not sure the best way to add such a test in this codebase (it gets a
bit funky to write out a file, then modify it at runtime, and clean up). I can
take a look at putting something together though
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