Problems when scrolling and using clipboard

[Chetsama]

Issues found in versions 2.1.1, 3.0.0alpha1 and 3.00alpha2

Values disappear after scrolling

When dragging values to auto-complete, decimal zeros are removed

Also seeing strange behaviour when copy and pasting cells, when value is pasted error is thrown:

Jan 06, 2021 2:52:30 PM com.vaadin.server.DefaultErrorHandler doDefault
SEVERE: 
java.lang.IllegalArgumentException: Invalid cell range, having lastRow < firstRow || lastCol < firstCol, had rows 0 >= 1 or cells 12 >= 12
	at org.apache.poi.ss.util.CellRangeAddress.<init>(CellRangeAddress.java:49)
	at com.vaadin.addon.spreadsheet.SpreadsheetHandlerImpl.onPaste(SpreadsheetHandlerImpl.java:294)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:155)
	at com.vaadin.server.ServerRpcManager.applyInvocation(ServerRpcManager.java:116)
	at com.vaadin.server.communication.ServerRpcHandler.handleInvocation(ServerRpcHandler.java:445)
	at com.vaadin.server.communication.ServerRpcHandler.handleInvocations(ServerRpcHandler.java:410)
	at com.vaadin.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:274)
	at com.vaadin.server.communication.PushHandler.lambda$new$1(PushHandler.java:148)
	at com.vaadin.server.communication.PushHandler.callWithUi(PushHandler.java:248)
	at com.vaadin.server.communication.PushHandler.onMessage(PushHandler.java:534)
	at com.vaadin.server.communication.PushAtmosphereHandler.onMessage(PushAtmosphereHandler.java:87)
	at com.vaadin.server.communication.PushAtmosphereHandler.onRequest(PushAtmosphereHandler.java:77)
	at org.atmosphere.cpr.AsynchronousProcessor.action(AsynchronousProcessor.java:225)
	at org.atmosphere.cpr.AsynchronousProcessor.suspended(AsynchronousProcessor.java:114)
	at org.atmosphere.container.Servlet30CometSupport.service(Servlet30CometSupport.java:67)
	at org.atmosphere.cpr.AtmosphereFramework.doCometSupport(AtmosphereFramework.java:2297)
	at org.atmosphere.websocket.DefaultWebSocketProcessor.dispatch(DefaultWebSocketProcessor.java:594)
	at org.atmosphere.websocket.DefaultWebSocketProcessor$3.run(DefaultWebSocketProcessor.java:345)
	at org.atmosphere.util.VoidExecutorService.execute(VoidExecutorService.java:101)
	at org.atmosphere.websocket.DefaultWebSocketProcessor.dispatch(DefaultWebSocketProcessor.java:340)
	at org.atmosphere.websocket.DefaultWebSocketProcessor.invokeWebSocketProtocol(DefaultWebSocketProcessor.java:448)
	at org.atmosphere.container.JSR356Endpoint$3.onMessage(JSR356Endpoint.java:272)
	at org.atmosphere.container.JSR356Endpoint$3.onMessage(JSR356Endpoint.java:269)
	at org.apache.tomcat.websocket.WsFrameBase.sendMessageText(WsFrameBase.java:402)
	at org.apache.tomcat.websocket.server.WsFrameServer.sendMessageText(WsFrameServer.java:119)
	at org.apache.tomcat.websocket.WsFrameBase.processDataText(WsFrameBase.java:502)
	at org.apache.tomcat.websocket.WsFrameBase.processData(WsFrameBase.java:301)
	at org.apache.tomcat.websocket.WsFrameBase.processInputBuffer(WsFrameBase.java:133)
	at org.apache.tomcat.websocket.server.WsFrameServer.onDataAvailable(WsFrameServer.java:82)
	at org.apache.tomcat.websocket.server.WsFrameServer.doOnDataAvailable(WsFrameServer.java:171)
	at org.apache.tomcat.websocket.server.WsFrameServer.notifyDataAvailable(WsFrameServer.java:151)
	at org.apache.tomcat.websocket.server.WsHttpUpgradeHandler.upgradeDispatch(WsHttpUpgradeHandler.java:148)
	at org.apache.coyote.http11.upgrade.UpgradeProcessorInternal.dispatch(UpgradeProcessorInternal.java:54)
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:59)
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589)
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:748)