Sorry, I didn't mean to speak with any authority on the specifics of KeePass. I'm neither a developer nor a user. I was just explaining the parent.

That said, the implementation probably differs on different platforms. 1Password, for example, uses a virtual "keyboard" on Android.

That's a different option (CTRL-C). You can copy and paste the username and password. There's a default clearing timeout that's more to ensure the user doesn't accidentally paste it elsewhere. The auto-type option I mentioned is different.