No, that's not what I have encountered. You should check my video to know what happened.
Download my SolveigMM-marker-lost1.mp4 from
http://s000.tinyupload.com/index.php?file_id=71751885847051421573
I find something strange later. When I try the same software on a Windows 7 x64 VMware Workstation virtual machine, loading the same video file, the marker lost problem does not appear.