TextArea: frozen/exception

I have a problem with TextArea. The behaviour is "occasional" but I'm able to 
reproduce it. There are two cases:
1. when I write quickly sometimes it throws exception (see stack trace below)
2. when text exceeds displayed rows of TA (starts scrolling up) and I click 
into area between soft-keyboard and dialog (see test code below) keyboard 
disappears (it's OK) but sometimes application freezes (see screenshot attached)

I'm testing on Android 4.1.2 (Sony Xperia SP), 4.2.2. (Google Nexus 7)

Test code (just copy it into button's action listener):

Container noteCont = new Container(new BoxLayout(BoxLayout.Y_AXIS));

        TextArea ta = new TextArea();
        ta.setGrowByContent(true);
        ta.setSingleLineTextArea(false);
        ta.setRows(5);
        ta.setColumns(50);
        ta.setMaxSize(8000);

        noteCont.addComponent(ta);  

        Dialog dlg = new Dialog("Note");
        dlg.placeButtonCommands(new Command[]{new Command("OK")});
        dlg.addComponent(noteCont);     
        dlg.setBackCommand(new Command("Cancel"));
        dlg.showDialog();

Stack trace:
[EDT] 0:0:21,641 - java.lang.NullPointerException
[EDT] 0:0:21,658 - java.lang.NullPointerException
    at com.codename1.ui.TextArea.initRowString(TextArea.java:954)
    at com.codename1.ui.TextArea.getRowStrings(TextArea.java:667)
    at com.codename1.ui.TextArea.getLines(TextArea.java:681)
    at com.codename1.ui.plaf.DefaultLookAndFeel.getTextAreaSize(DefaultLookAndFeel.java:860)
    at com.codename1.ui.TextArea.calcScrollSize(TextArea.java:1023)
    at com.codename1.ui.Component.getScrollDimension(Component.java:542)
    at com.codename1.ui.TextArea.isScrollableY(TextArea.java:521)
    at com.codename1.ui.Component.isScrollable(Component.java:1373)
    at com.codename1.ui.Component.internalPaintImpl(Component.java:995)
    at com.codename1.ui.Component.paintInternalImpl(Component.java:984)
    at com.codename1.ui.Component.paintInternal(Component.java:967)
    at com.codename1.ui.Component.paintInternal(Component.java:935)
    at com.codename1.ui.Component.paintComponent(Component.java:1202)
    at com.codename1.ui.Component.paintComponent(Component.java:1154)
    at com.codename1.impl.CodenameOneImplementation.paintDirty(CodenameOneImplementation.java:370)
    at com.codename1.ui.Display.edtLoopImpl(Display.java:917)
    at com.codename1.ui.Display.invokeAndBlock(Display.java:1048)
    at com.codename1.ui.Display.invokeAndBlock(Display.java:1083)
    at com.codename1.impl.android.InPlaceEditView.waitForEditCompletion(InPlaceEditView.java:344)
    at com.codename1.impl.android.InPlaceEditView.edit(InPlaceEditView.java:465)
    at com.codename1.impl.android.AndroidImplementation.editString(AndroidImplementation.java:410)
    at com.codename1.ui.Display.editString(Display.java:1352)
    at com.codename1.ui.Display.editString(Display.java:1323)
    at com.codename1.ui.TextArea.editString(TextArea.java:541)
    at com.codename1.ui.TextArea.pointerReleased(TextArea.java:574)
    at com.codename1.ui.Form.pointerReleased(Form.java:2129)
    at com.codename1.ui.Dialog.pointerReleased(Dialog.java:1680)
    at com.codename1.ui.Component.pointerReleased(Component.java:2241)
    at com.codename1.ui.Display.handleEvent(Display.java:1709)
    at com.codename1.ui.Display.edtLoopImpl(Display.java:913)
    at com.codename1.ui.Display.invokeAndBlock(Display.java:1048)
    at com.codename1.ui.Display.invokeAndBlock(Display.java:1083)
    at com.codename1.ui.Form.showModal(Form.java:1398)
    at com.codename1.ui.Dialog.showModal(Dialog.java:1074)
    at com.codename1.ui.Dialog.show(Dialog.java:465)
    at com.codename1.ui.Dialog.showPackedImpl(Dialog.java:1351)
    at com.codename1.ui.Dialog.showPacked(Dialog.java:1262)
    at com.codename1.ui.Dialog.showImpl(Dialog.java:1034)
    at com.codename1.ui.Dialog.show(Dialog.java:1016)
    at com.codename1.ui.Dialog.showDialog(Dialog.java:1413)
    at userclasses.StateMachine.onMain_ButtonAction(StateMachine.java:61)
    at generated.StateMachineBase.handleComponentAction(StateMachineBase.java:320)
    at com.codename1.ui.util.UIBuilder$FormListener.actionPerformed(UIBuilder.java:2628)
    at com.codename1.ui.util.EventDispatcher.fireActionSync(EventDispatcher.java:383)
    at com.codename1.ui.util.EventDispatcher.fireActionEvent(EventDispatcher.java:326)
    at com.codename1.ui.Button.fireActionEvent(Button.java:376)
    at com.codename1.ui.Button.released(Button.java:407)
    at com.codename1.ui.Button.pointerReleased(Button.java:495)
    at com.codename1.ui.Form.pointerReleased(Form.java:2129)
    at com.codename1.ui.Form.pointerReleased(Form.java:2076)
    at com.codename1.ui.Component.pointerReleased(Component.java:2241)
    at com.codename1.ui.Display.handleEvent(Display.java:1709)
    at com.codename1.ui.Display.edtLoopImpl(Display.java:913)
    at com.codename1.ui.Display.mainEDTLoop(Display.java:858)
    at com.codename1.ui.RunnableWrapper.run(RunnableWrapper.java:119)
    at com.codename1.impl.CodenameOneThread$1.run(CodenameOneThread.java:60)
    at java.lang.Thread.run(Thread.java:856)

refs: 
https://groups.google.com/forum/#!topic/codenameone-discussions/2ON3u91xkOU
Original issue reported on code.google.com by ivan.ila...@gmail.com on 23 Jul 2013 at 7:34
Attachments:
frozen.png
AliSherKashif / codenameone

TextArea: frozen/exception #798
