ionic2 bug(tabs) - tab page without navbar results in navbar placeholder being transparent

[zakton5]

Short description of the problem:

When a tab page does not contain an ion-navbar component, then the navbar placeholder in the ion-tabs component is left empty. This is fine, but because the CSS has min-height: 44px, content behind the current tab page can be seen.

What behavior are you expecting?

I would expect the navbar placeholder to be completely hidden, or its height to be 0 if the current tab page has no ion-navbar. The plunker below shows this bug on tab page 2.

Which Ionic Version? 2.x

Plunker that shows an example of your issue

https://plnkr.co/edit/XPoPzFsm03x8lvPrHMlH?p=preview

Run ionic info from terminal/cmd prompt: (paste output below)
Cordova CLI: 6.2.0
Gulp version: CLI version 3.9.1
Gulp local: Local version 3.9.1
Ionic Framework Version: 2.0.0-beta.8
Ionic CLI Version: 2.0.0-beta.25
Ionic App Lib Version: 2.0.0-beta.15
ios-deploy version: 1.8.4
ios-sim version: 5.0.6
OS: Mac OS X El Capitan
Node Version: v4.4.4
Xcode version: Xcode 7.3 Build version 7D175

[brandyscarney]

This should be fixed by the beta 10 release. Please see the breaking changes & update steps and let us know if it's still an issue: https://github.com/driftyco/ionic/blob/master/CHANGELOG.md#200-beta10-2016-06-27

Also related:
#5556
#5164

Thanks for the issue!