Hi,
The code changes required to addres this issue have not made it out of testing and development yet. It will be solved in a future release however. In fact, we will bump this issue up in priority so it gets addressed sooner rather than later.
In the meantime, as suggested in a previous response to this issue (via our issue tracking system), you can workaround this issue by setting the Viewer's AdjustVerticalResolution property to false.
[C#]
viewer1.AdjustVerticalResolution = false;
[VB.Net]
Viewer1.AdjustVerticalResolution = False
I just tested this and it's working as expected.