Qml TextEdit / TextInput component on S60 handles VKB arrows and backspace only when first focused

Focus TextInput or TextEdit element (with pre-set text). VKB opens. Type something - move around with cursors, delete with backspace. All good so far. Close VKB.

Try again (sometimes it takes couple of tries, usually 2nd try is enough, also try the other editor, see attached test app). Cursor keys won't move cursor - sometimes internal cursor position does seem to move. Backspace does not work properyly. Tapping editor to position cursor usually places cursor at start or end of editable text. It is impossible or at least very hard to do any meaningful edits. However, it seems that if you are lucky you can manipulate the invisible cursor to such a place that you can erase whole text and type new instead.

So in general it appears that problem here is position of visible cursor.

This bug seems similar to
https://bugreports.qt.nokia.com/browse/QTBUG-13077
except that this happens only second time you use editors.