Ion-page-invisible class not being removed navigating in between pages [VIDEO]

For me this behavior was being caused by accidentally having exact={true} on a route, when trying to render nested routes in that route with IonTabs.
/page exact={true}
/page/tab1
/page/tab2
The tricky part was that even though the sub-routes (afaik) aren’t supposed to render at all, they would actually render but Ionic hides them with ion-page-hidden. If the tab2 page didn’t render at all, I probably would have caught the exact issue sooner.