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

I have a project and I use bottomtabbedpage-xamarin-forms plug-in in my project.
github of the plug-in

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

Does any got the same issue or have a solution??

Thanks.