Normal Steps to Reproduce
1. Run the following code
<zk>
<window border="none" width="300px" height="300px" style="border: 1px solid red">
<div hflex="1" vflex="1" style="border: 1px solid blue">The blue div should cover the red border.</div>
</window>
</zk>
Current Result
The size of the blue border is less than the size of the red border.
Expected Result
The blue border and red border are the same size.
Debug Information
Workaround
