id summary reporter owner description type status component version resolution keywords cc guest host 13108 Guest mouse cursor range limited without guest additions installed ErikW "When using a guest OS without VirtualBox Guest Additions installed, the guest mouse cursor can only be moved within a part of the guest desktop. Before the guest mouse cursor reaches the edge of the desktop, the cursor suddenly jumps outside the guest window and appears on the host OS desktop. The problem happens in version 4.3.12 and 4.2.24 as well as previous versions. The specific host OS is Windows 7 Professional SP1 and the guest OS is Windows XP SP3 (without guest additions). The same problem happens for other guest operating systems without guest additions installed. The display resolution on the host OS is higher than that of the guest OS. The host OS resolution is 1680 x 1050. The guest OS resolution is 1024 x 768. It appears that the mouse becomes un-captured when the (invisible) host cursor position moves outside the guest window. The cursor in the guest moves slower than in the host, so the guest cursor has not reached the edge of the guest desktop. Either the mouse should remain captured, or the mouse position in the host should be converted to the correct guest position based on the different screen resolutions. The problem also happens in full screen mode. The guest display uses only a portion of the host screen, and the guest mouse cursor stops moving when the (invisible) host cursor moves outside the guest portion of the screen. The host mouse cursor reappears before the guest cursor has moved to the edge of the guest desktop. This problem makes VirtualBox very difficult to use with boot CDs or operating systems not supported by guest additions. In some very old versions of VirtualBox (3.x) this problem did not occur. I frequently use VirtualBox to test boot CDs that I have created for backup, partitioning and encryption software." defect new other VirtualBox 4.3.12 mouse cursor pointer position range all Windows