Minor inconvenience when saving projects
When you save a session for the first time, the save window doesn't display the file extension, only the session name.
So, if Qtractor is configured to save as .qtr by default (for example), MyProject.qtr doesn't appear; only MyProject does.
The problem is that even if you select a different format from the dropdown menu (qtt, for example), because it doesn't have the extension, it still saves as qtr.
It took me ages to realize that it wasn't my mistake when saving, since we generally want to save in the default format.