When a dock widget is moved between high DPI screens, it's native position is calculated and applied. The calculation falls back to a mapping without high DPI, if the dock widget's initial position cannot be mapped to a QScreen. A warning was emitted in that case, to inform the user about a potential screen misconfiguration (e.g. a physical screens not being mapped exactly next to each other, leaving a gap). Despite of the warning, the position calculation safely falls back to non high DPI. The warning also kicks in when the dock widget's top left position is located outside a screen, hence being invisible. Since calculating an invisible top left position is possible without high DPI mapping, this patch replaces the warning with a debug message. Fixes: QTBUG-108311 Pick-to: 6.4 Change-Id: I692034e5aeb5f7a94cca519ce055795fa72ea216 Reviewed-by: Shawn Rutledge <shawn.rutledge@qt.io>