Hi Adam,
Thanks for your quick reply. I've been testing my site some more and found this as the main difference between the demo (which works fine) and my own site: I use the editor inside a frame (window is split vertically in left and right frames). If I test with a normal window (no frames) the cursor stays in position, though the popups still appear behind the browserwindow. When used inside a frame the popup resets the cursor to the home position.
By the way: this concerns InsertChar, PasteText, PasteWord; Paste doesn't work anyway. Setting EditorOnPaste to PasteCleanHTML gives a "Not implemented error". I did not test these matters in the demo.
Hopefully this will help you solve the issues.
Sander