* fix bug: side bar scrolls after clicking on lower item
Signed-off-by: Yangjun Wang <yangjun.wang@wartsila.com>

* fix issue main area missing issue, add mobx observer to TabLayout
Signed-off-by: Yangjun Wang <yangjun.wang@wartsila.com>
Co-authored-by: Yangjun Wang <yangjun.wang@wartsila.com>