White flash when the keyboard opens in dark themes (Android)

In the Dark and Black themes, a light strip flashed while the keyboard slid in. Fixed for the next release: what Android draws behind the app now follows your theme, so there is nothing light to show while the keyboard slides in. Gratin also opens in your theme's colour from the next launch on, and on Android 13 and later its launch screen is dark in the dark themes too. Reported by a beta tester.