I had a project open in V3088 (Mac version) and went to change the project I was working on via the project manager tab.
I had forgotten to save some files and was asked if I wanted to save the files before opening the other project.
I hit cancel instead because I wanted to check something, but the project name changed at the top of XDK (Next to the Projects Folder icon) to the name I had selected before being prompted to save. However my files are still that of the project I had open previously.
Thanks for bringing this up. I have reported this issue. It's the cancel operation that is treated differently on two different tabs. For now, please save your project before you want to switch to another project.