Even though logback.xml gets correctly loaded on startup and scheduled for reloading, changes to the file don't get detected and configuration never gets refreshed.

Steps to reproduce:

1. download a clean Tomcat bundle (to make sure there are no interferences)
2. clone https://github.com/kryger/logback-war-configuration-scan-repro
3. build with mvn package
4. copy the built demo-0.0.1-SNAPSHOT.war file to tomcat/webapps/
5. start Tomcat up (tomcat/bin/startup.sh)
6. watch tomcat/logs/catalina.out
7. navigate to http://localhost:8080/demo/

00:51:16,860 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at file:/home/kryger/Programy/apache/apache-tomcat-8.0.12/webapps/demo/WEB-INF/classes/logback.xml
00:51:16,926 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Setting ReconfigureOnChangeFilter scanning period to 2 seconds
00:51:16,926 |-INFO in ReconfigureOnChangeFilter

Unknown macro: {invocationCounter=0}

- Will scan for changes in [[/home/kryger/Programy/apache/apache-tomcat-8.0.12/webapps/demo/WEB-INF/classes/logback.xml]] every 2 seconds.
00:51:16,926 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - Adding ReconfigureOnChangeFilter as a turbo filter
(...)

No matter how long I wait and how many log events happen (i.e. reloading the page) the /webapps/demo/WEB-INF/classes/logback.xml file doesn't get reloaded.