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If you wish to upgrade to processing-3.0.2 for JRubyArt, it is recommended that you also upgrade to the latest Oracle java (1.8.0_74) which includes a bug fix for JavaFX (otherwise you get an inverted display). Otherwise stick with processing-3.0.1, that has a workaround for the bug, until you upgrade your java (and or open-fx gets fix).
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Update the latest openfx (javafx.runtime.version=8.0.76) has fix