Well, apps belong to the App Drawer, said the screen purist, regardless of what all Chinese manufacturer overlays are trying to force on them, and started searching for a way to prevent new app icons multiplying on the homescreens like there is no tomorrow. Here is what you need to do, according to their findings:
1. Start the Play Store app on your handset, and hit the context menu section (that's the three-dash thingy top left);
2. From there, scroll down a bit, and choose the Settings option;
3. You should now be seeing the "Add icon to Home screen" checkbox, which is marked by default;
4. Uncheck it, and app icons will only go where they belong after installing a new app - in the drawer, ready to be taken front and center only if you decide to do so.