When I drag a file from a Finder window to a target app (e.g., Preview), macOS switches to the next Space (Desktop) and back. I believe this started happening in macOS 27.2, and is still happening in 27.2.1.
Setup: 5 Spaces (or “Desktops”, in the Mission Control UI), “Displays have separate Spaces” off, two displays.
To reproduce: drag a file from a Finder window onto a Preview window on the second display (both in Space 4).
Observed behavior: the Mac jumps to Space 5 as soon as the drag enters the target window. It returns to Space 4 if you keep holding the button, and Preview is frontmost by then.
I have tried: Dragging on to another app, and Changing setting “…switch to a Space with open windows” in Settings > Desktop & Dock > Mission Control. Same behavior noted.
Interestingly, the same drag onto a window on the primary display behaves normally. The display from which the drag originates doesn’t seem to matter. Any ideas?