Affinity Designer 2.3.0 / MacOS 13.6.1 / MacBook Pro M1 + Studio Display
When I have 2 or more documents open and I "undock" one document using Float View to Window or simply grabbing its tab away from application frame, this window floats above application frame and I can move it to external monitor or arrange it side by side with application frame with other opened documents. BUT when I try to close this floating document, on its place stays empty window frame that is impossible to close.