bug: iOS condense header breaks page animation

[KevinLeneschmidt]

Prerequisites

• I have read the Contributing Guidelines.
• I agree to follow the Code of Conduct.
• I have searched for existing issues that already report this problem, without success.

Ionic Framework Version

v7.x

Current Behavior

I want to use 2 headers like shown in the docs condense header 1 (for ios) and used the correct props like transfluent and collape, but this breaks my page transitions. My dev console shows following error:

Cannot read properties of null (reading ‘getBoundingClientRect’)
at createLargeTitleTransition (chunk-GHBCID63.js?v=0ecf4cc5:57:64)
at iosTransitionAnimation (chunk-GHBCID63.js?v=0ecf4cc5:272:35)
at animation (chunk-QARUQ2O5.js?v=0ecf4cc5:977:17)

If i remove the second header, my page transitions work like usual. It is also working when i remove the ion-buttons from the toolbar - thats also strange.

I have a very basic “IonBase” component, which I use on every page. I also created a repo

Expected Behavior

Basic page transition without errors. Currently, there is no transition.

Steps to Reproduce

Clone the repo

Code Reproduction URL

https://github.com/KevinLeneschmidt/ionic-vue-ios-header

Ionic Info

Ionic:

Ionic CLI : 7.2.0
Ionic Framework : @ionic/vue 7.8.1

Capacitor:

Capacitor CLI : 5.7.4
@capacitor/android : not installed
@capacitor/core : 5.7.4
@capacitor/ios : 5.7.4

Utility:

cordova-res : not installed globally
native-run : 2.0.1

System:

NodeJS : v21.7.1
npm : 10.5.0
OS : macOS Unknown

Additional Information

I also opened a topic in the ionic forum: forum

[KevinLeneschmidt]

I tested around and found out that the problem was the missing text on the ion-back-button - i didn´t want to use a text, so i just set it to an empty string, but that was the problem. If i set it to a string with a value, everything works fine... That is something they should change about the ion-back-button. I want to be able to remove the text. If i set it to null or undefined, the 'Back' text appears.

[ionitron-bot]

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