Moving the pointer diagonally from a menu item toward its open submenu crossed sibling items, whose hover timers switched or closed the submenu.
While a submenu is open, a sibling hover is deferred when the pointer is inside the triangle from its previous position to the submenu's near corners, including flipped submenus. Stopping on a sibling still switches after 300 ms, moving away keeps the normal delays, and entering the submenu cancels pending switches. This lives in `MenuList`, so every menu and nested level gets it.
Fixes#2128
On macOS, with an editable element focused and an input method active, WebKit can deliver a tap as pointerup then pointerdown, so drag trackers saw every later pointermove as a held button: one tap plus a pointer move started a phantom drag (file drag label, tab detach, tool window move) and the next tap dropped it. A drag now starts only from a move with the primary button down, a move without it cancels the press, and late button-less moves after a drag started are ignored so the drop is kept. Resizers, dialog drag/resize, pan and the review gutter end instead; the Project view also listens for pointercancel.
Refs #760
Co-authored-by: ntbang0901 <[email protected]>
l0ng-ai
ntbang0901
Walter WangтаWalt von Neumann