Why does Android keep closing pages in my apps ?

I am REALLY tired of AmazonOS/Android causing my apps to close pages if I switch to another app. Ex., if I try to login into an app with 2 level auth, I switch away to read the email with the security code and when I come back the app has gone back to the login page. Or I am filling out Feedback popup, go to look at something and come back to find the feedback page gone. I do not think this is an app issue, as you don't have this issue when you minimize on Windows, it seems to do with how Android handles minimizing. Android is a good OS, but this is a fundamental problem and really annoying. I am running the latest 5.3.6.4.
Jack

 

Let me expand on what I said. First, I will agree that it seems to be a browser issue, but I have seen it in both Opera and Firefox. I have an Amazon Fire 10 running Android 5.3.6.4, which is based on Android 5.1. What happens is I start an browser, let's say Opera. You go to a website to login, enter the username and password, and it tells you to enter the code it just emailed you. So you switch to your email app, get the code and go back to Opera. The app goes active, but reloads the page instead if going back to where it was. Or in other cases I start entering something in a web form, switch to a different app, and again when I go back the browser reloads instead of just reopening.
I guess it could be how the browsers work, but that would not make a lot of sense, since it seems to work okay on Windows. So if no one else sees this then I might believe it was an Amazon OS problem.

 

I use both the Gmail and Yahoo mail clients, but it does the same thing if I switch to KeePass to look for something. And thinking about it, KeePass does something similar, in that I will open it, look at an entry, switch away and when I come back it has logged me out. I took it for a feature, but maybe not. It has an idle timeout, but that is not what does it.
I am trying to remember if my Lenovo Tab2 did the same thing, before it died, but I am not sure.

 

Being honest, I stopped using Firefox as i felt Opera was faster on my tablet, and from what I can find, Opera does not auto-refresh. I might try Firefox again with it disabled and see what happens.

And I appreciate the time everyone has put into trying to resolve my issue, but it is actually not that major an issue. I have learned that sometimes I just need to use my laptop or desktop to do some things. Although I run lots of Windows equipment (there are 3 laptops and 2 desktops at my house, and only 1 laptop is not mine), I am a Unix guy at heart, so I prefer Android over any other tablet Os.

Thanks
Jack

 

So how do you get Low Resources in Android ? My understanding I thought that the Os would kick the least recently used app out of memory if it needed space to run a new app ? If that is true and the browser is the most recent when I switch to a new app, unless the browser is using virtually all of memory by itself then it should not be a problem ?

(Editorial: IMHO I totally dislike the way Android manages memory. When I exit an app I think it should be removed from memory, not left cached. The probability I will need it again that soon is pretty low and it means the garbage collection is part of the process termination and not incurred later on instead. BUT that is just MO )