Interface rendering error

[xiaojiang605]

Hi,
Firstly,I downloaded the latest Xrdp and NeutrinoRDP source code of the master branch from the following website:
1)https://github.com/neutrinolabs/NeutrinoRDP
2)https://github.com/FreeRDP/xrdp
Then, installed them in a debian server successfully, but got incorrect interface rendering after the following steps:
1)Connect to the proxy server using mstsc in a window7 computer.
2)select NeutrinoRDP proxy module to connect to the remote server which runs Windows Server 2003
3)open software of Microsoft virtual Manager 2008 R2,then choose one option and a new window created,but there will Interface rendering error as follow:


we can find the second picture has mixed with the background and some part of it doesn't rendering at all.
the normal window should show as follow:

Is this a bug in Xrdp or NeutrinoRDP? Has anyone ever been in such situation, or does anyone know how to solve this problem?
Thanks a lot.
My email address:[email protected]