Undo option doesn't work on vertex editing

[APEXnow]

Editing vertices on primitives in UltraEngine v0.9.9 Build 2738.  I was trying to make changes to a model, but the vertices were snapping to the grid, which is fine, but I needed to readjust them, so I tried to use Undo, but the Undo option is greyed out.  My Undo history is set to 20 by default.

Can the Undo function be fixed to allow reversal of Vertex editing?

[EDIT] Apologies, I had posted this before seeing the other posts regarding the Undo issues.

Thanks.

Paul.

 

[Josh]

First reported here:

 

[Josh]

This should be working now.