Forgot about this until today.
An example of why I would like to close a project has just occurred again. When I open AppStudio a large(ish) project loads and takes a while to complete. When I switch to another large(ish) project, after laoding is almost complete, AppStudio crashes without error messages. I generally open files from Windows Explorer now, rather than the recent file list.
For the forward and back buttons, I would like to go to and forth between lines of code, wherever they are; irrespective of what form they are on. Essentially, the same as Visual Studio and others,
I don’t think the deploy selector works as you say. If I have Deploy to server… selected in Preferences, and I then select Deploy to Folder in the selector, then the files are sent to the server. And vice versa. Both preferences AND selector have to be set to get the required output.