Testing on Windows 8 Release Preview running in VirtualBox.
Click to set caret position and click-and-drag to select text don't seem to work reliably in IE 10. Tested both in desktop and Metro mode.
Mouse activity can be seen in mouseover and mousedown text decoration/coloring on links, but ... most of the time the caret doesn't move / selection doesn't change.
Occasionally one gets through, it's not clear how/why.
Note that selection with arrow keys+shift works fine.
Version: unspecified
Severity: normal