Ionic tabs not showing


I’m developing an ionic app which has a side menu, and the two first entries have each one an ion-tabs component. The ion-tabs pages are loaded correctly, but the problem is that the root tab of each ion-tabs is not showing properly. When I navigate from page 1 to 2 or from page 2 to 1 (only the pages with tabs), the last selected tab is showing and only when I press the desired tab, the screen is reloaded with the contents of that tab.