Ion-tab-button and ion back button

i have problem with ion-tabs ionic

lets say i having tab1, tab2,

after i using ion-back-button to /tabs/1 from another page,
ion tabs will show ion-tabs 1 page content with correct,
when i tried to select tab2,
this will remain content 1 and the url changed to /tabs/2,

but instead of ion-back-button, if i using navigate([‘tabs/1’]), it is no problem
anyone got idea for that?