Visual Studio works weird with Emacs keybindings

Question

I linked Alt+ Dto Edit.EmacsWordDeleteToEndin Visual Studio. This is the only key binding that starts with Alt+ D, so there are no conflicts.

However, when I hit Alt+ D, in some cases (more often than permissible) the cursor moves only a word to the end, and does not delete it. I cannot find a good way to reliably reproduce this.

The equivalent occurs with Alt+ Bkspce, which I have attached to Edit.EmacsWordDeleteToStart, i.e. the cursor sometimes just moves over the word.

I use ReSharper 5 if that matters.

Any ideas?