I may have a related fix for that: see my Pull-Request on Github: https://github.com/qos-ch/logback-contrib/pull/29 for issue [logback-janino-fragment is missing imports for ch.qos.logback.classic and slf4j|https://github.com/qos-ch/logback-contrib/issues/28]

It may fix also https://jira.qos.ch/browse/LOGBACK-1125 

What are the next steps to get my Pull-Request reviewed?
Should I bring this up as a separate issue in JIRA?