Next to the ".qmlproject" file, there is another file with the extension ".qtds". What does it contain? Should multiple people working on the same Qt Design Studio project share the same ".qtds" file or are its contents specific to individual users?
The .qtds file is the equivalent of a .user file in Qt Creator. In the context of QDS it stores a few user-related settings for a project if you e.g. change the run environment for the QML runtime.