Trying to prevent closing and reloading of pages on Android browsers when switching to other app and back. Is there an app or setting I can use to prevent this from happening? Android 9.
This is per design of Android OS, its not related to a particular browser. The best you can do is limit yourself to use the least amount of apps and hope for the best. Try not to use more than 2 apps at the same time. Even so, it appears to be time based, regardless of available ram.
In the newer androids a secondary screen is possible, i think you can emulate one in dev options, so maybe try that? (move the app to the secondary screen) so it remains "always open".