With javafx ant task signjar i.e. <fx:signjar ..... and if destdir and sourcejar are using some relative path e.g. destdir=./tests/javafx/signedJars/html whereas sourcejar="./tests/javafx/signedJars/html/test.jar"
then instead of the signing the jar against specified sourcejar, it coped the whole jar path into dest_dir and then signs it causing mistmatch with codebase inside the jnlp. For example Instead of signing jar ./tests/javafx/signedJars/html/test.jar, it's creating copies the jars as ./tests/javafx/signedJars/html/tests/javafx/signedJars/html/test.jar and then signs it