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With "Zoom cursor" off in Adaptive or Custom view, the remote cursor bitmap was registered at scale 1.0. NSCursor and GdkCursor treat the bitmap size as logical pixels, so on a HiDPI controller the cursor was drawn DPR times larger than in Original view (which already passes 1/DPR) and than on Windows (whose cursor path is in physical pixels). A HiDPI remote such as KDE Wayland sends a 48-64 px bitmap, which then showed up 3-4x too big on a Retina Mac. Scale the bitmap by 1/DPR in that case, and scale the Flutter-painted cursor used while the peer moves the mouse the same way so its size does not jump. The new branch is an identity at DPR 1 and the Windows paths are untouched. Fixes https://github.com/rustdesk/rustdesk/discussions/15363 Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01K8HSHTEHo27mDcJXVyVfSP