Created attachment 17209 [details]
Sample app for reproducing title update bug on Android
On Android with AppCompat the TabbedPage tab titles cannot be updated.
### Steps to Reproduce
1. Run the attached repro project
2. Press the "Change title" button embedded within the tab.
### Expected Results
Tab titles are updated. In the sample app the first tab title should change to "Hello" and second tab title should change to "World".
### Actual Results
Tab titles are not updated.
### Testing Info
Reproduced using Xamarin forms 184.108.40.206-pre1.
The bug was not reproducible until AppCompat was added by following these instructions: https://developer.xamarin.com/guides/xamarin-forms/platform-features/android/appcompat/
Marking as CONFIRMED since I am able to reproduce the issue with the attached sample project and repro steps.
Still reproducible in Xamarin Forms version 220.127.116.11-pre2.
What is the behavior on iOS and UWP?
Should be fixed in 2.3.4-pre1
I have checked this issue with 2.3.4-pre1 and observed that this issue has been fixed.
Hence closing this issue.