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When accessing the webapp without the trailing slash after the context http://localhost:8080/magnoliaAuthor after login the user is presented with a 404 page rather than admincentral.  This behavior is configurable via the mapperContextRootRedirectEnabled and mapperDirectoryRedirectEnabled attributes of the Context which may be used to restore the previous behavior. See Tomcat 9.0.0.M2 in https://tomcat.apache.org/tomcat-9.0-doc/changelog.html.

Reloading a page causes a 404 error

When you open a page for editing and reload it in the browser, an extra semicolon is added to the URL fragment and the server returns a 404 error. Every subsequent reload adds another semicolon. This issue occurs with older versions of the Tomcat application server. To resolve this issue, upgrade to Tomcat 7.0.47+. See 

Oracle WebLogic, IBM WebSphere

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