@SuppressWarnings("deprecation")
	@Override
	public void show() {
		// overridden to make sure only some clients can show this frame
		if (showingAllowed) {
			super.show();
		}
	}
Hack to fix:
<ol>
 <li>JFrames cannot be invisible</li>
</ol>
Ghidra/Framework/Docking/src/main/java/docking/HiddenDockingFrame.java