Since 0.10 the glob matching broken/incompatible

Between version 0.9 and 0.10, there seems to be a subtle change that causes files not to be found in the workspace. The plain file foo in root of the workspace can not be found using foo pattern, only as **/foo.

See https://github.com/jenkinsci/acceptance-test-harness/blob/master/src/test/java/plugins/CIFSPublishPluginTest.java for reproducers.