Fix for "Synchronizing null%" systray bug introduced in 3.2.0

src/main/java/org/qortal/controller/Controller.java

@@ -735,10 +735,14 @@ public class Controller extends Thread {
 				actionText = Translator.INSTANCE.translate("SysTray", "CONNECTING");
 				SysTray.getInstance().setTrayIcon(3);
 			}
-			else if (!this.isUpToDate()) {
+			else if (!this.isUpToDate() && Synchronizer.getInstance().isSynchronizing()) {
 				actionText = String.format("%s - %d%%", Translator.INSTANCE.translate("SysTray", "SYNCHRONIZING_BLOCKCHAIN"), Synchronizer.getInstance().getSyncPercent());
 				SysTray.getInstance().setTrayIcon(3);
 			}
+			else if (!this.isUpToDate()) {
+				actionText = String.format("%s", Translator.INSTANCE.translate("SysTray", "SYNCHRONIZING_BLOCKCHAIN"));
+				SysTray.getInstance().setTrayIcon(3);
+			}
 			else {
 				actionText = Translator.INSTANCE.translate("SysTray", "MINTING_DISABLED");
 				SysTray.getInstance().setTrayIcon(4);