Autosave causes exceoption - No longer can save library!

[Siedlerchr]

Create a new biblatex lib
add an entry
add an author
hit repeatedly ctrl+s

org.jabref.logic.exporter.SaveException: X:\...\Community_Literatur.bib.tmp -> X:\Arbeit\Community_Literatur.bib
	at org.jabref.gui.exporter.SaveDatabaseAction.saveDatabase(SaveDatabaseAction.java:86)
	at org.jabref.gui.exporter.SaveDatabaseAction.doSave(SaveDatabaseAction.java:123)
	at org.jabref.gui.exporter.SaveDatabaseAction.save(SaveDatabaseAction.java:165)
	at org.jabref.gui.BasePanel.runCommand(BasePanel.java:650)
	at org.jabref.gui.actions.OldDatabaseCommandWrapper.execute(OldDatabaseCommandWrapper.java:37)
	at org.jabref.gui.actions.JabRefAction.lambda$new$2(JabRefAction.java:29)
	at org.controlsfx.control.action.Action.handle(Action.java:419)
	at org.controlsfx.control.action.Action.handle(Action.java:64)
	at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
	at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
	at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
	at javafx.event.Event.fireEvent(Event.java:198)
	at javafx.scene.control.MenuItem.fire(MenuItem.java:462)
	at com.sun.javafx.scene.control.ControlAcceleratorSupport.lambda$doAcceleratorInstall$12(ControlAcceleratorSupport.java:165)
	at com.sun.javafx.scene.KeyboardShortcutsHandler.processAccelerators(KeyboardShortcutsHandler.java:347)
	at com.sun.javafx.scene.KeyboardShortcutsHandler.dispatchBubblingEvent(KeyboardShortcutsHandler.java:163)
	at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
	at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
	at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
	at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
	at javafx.event.Event.fireEvent(Event.java:198)
	at javafx.scene.Scene$KeyHandler.process(Scene.java:3964)
	at javafx.scene.Scene$KeyHandler.access$1800(Scene.java:3910)
	at javafx.scene.Scene.impl_processKeyEvent(Scene.java:2040)
	at javafx.scene.Scene$ScenePeerListener.keyEvent(Scene.java:2501)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:217)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler$KeyEventNotification.run(GlassViewEventHandler.java:149)
	at java.security.AccessController.doPrivileged(Native Method)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleKeyEvent$352(GlassViewEventHandler.java:248)
	at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
	at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleKeyEvent(GlassViewEventHandler.java:247)
	at com.sun.glass.ui.View.handleKeyEvent(View.java:546)
	at com.sun.glass.ui.View.notifyKey(View.java:966)
	at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
	at com.sun.glass.ui.win.WinApplication.lambda$null$147(WinApplication.java:177)
	at java.lang.Thread.run(Unknown Source)

[Siedlerchr]

Addition: It seems like there is a hold/lock on the temp file.
Edit// Autosave was enabled
When I disable autosave it works flawlessly

[Siedlerchr]

I can no longer reproduce this in the current master