Hi Lars,
To be specific, you can get a revised version of Map Suite Web Edition that contains a fix for this bug by downloading the most recent Daily Build package from our Customer Portal. Once you do that, you'd just extract the DLLs from the daily build package and reference them in your project in place of your older DLLs.
Once you login to the Customer Portal, click on "My Product Downloads" and then click either the Daily Development Builds tab or the Daily Production Builds tab. The Daily Production Builds contain only bugfixes and are more stable (i.e., tested for production use). By comparison, the Daily Development Builds contain brand new features, some of which are beta or experimental, with stability not 100% guaranteed.
For more info about our daily build system, see this wiki article.
Thanks,
ThinkGeo Support