Switch tab page cause previous tab page reload on Xamarin.Forms Android

[chentotal]

I have a project and I use bottomtabbedpage-xamarin-forms plug-in in my project.
I use Xamarin.Forms Version 2.5.0.280555.
It is fine.
But if I update grade Xamarin.Forms to higher version, I got an problem.
The problem is if I switch tab page then switch back to previous tab page.
The previous tab page would reload.
For example, I switch to page3 from page1, and then switch back to page1.
Page1 would reload.
I tried 3.0.0.561731 got the same result.
My test project

I don't if this caused by bottomtabbedpage-xamarin-forms or by Xamarin.Forms.

Thanks.

[tuyen-vuduc]

Hi,

How do you load your data? Do you you any kind of MVVM framework?

Plz create a very simple app with and without BTP to check.

Cheers.

[chentotal]

Hi,
I just create a page(Page1) with scroll view and put about 10 labels in the scroll view.
And I put Page1 to MainPage which is set 5 tabbed page.
I don't load any data and not use any kind of MVVM framework.

Without BTP, it works fine.

Thanks.