Escape on the realm list closed the list and then also quit the game from the login screen, or went back to login from character select.
1.12.1 walks the keyboard frames once per press, strata high to low, and stops at the first handler that takes it (`0x765f10`, leaving at `0x765f64`/`0x765f86`). The realm list is DIALOG strata (`RealmList.xml:246`), so its Escape never reaches the screen beneath, even though it hides itself.
benilla's list and screens read the keys in no fixed order. A screen only checked whether the list was still shown, and the list's own Escape had just hidden it. Who owns a frame's keys is now decided once, before any of them runs (`Realms::owns_input`, set in `PreUpdate`).
Tests run the real list and screen systems in both orders, and fail before the fix with the reported symptoms.
Fixes#817
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
