Illegal character in opaque part in Windows

Getting,
AMQ222277: Problem initializing automatic logging configuration reload for file

Environment:
jboss eap 7.2.1. start (windows)

Attached is the server log file.

It sets the "logging.configuration" system property to a file: URL it creates using JBOSS_CONFIG_DIR.
JBOSS_CONFIG_DIR is a file system path, and not a url, so the syntax is different. Its not a valid transformation.

It seems it gets overlooked because whatever normally processes it apparently doesn't validate it, and it happens to "accidentally"
work on Linux because the syntax happens to look the same.
But Artemis/broker actually expects it to be a valid URL (which is appropriate).

Looks like the broker ignores the error, and just skips "automatic logging configuration reload", whatever that is.