[Bug Report] Background Color Change Not Applying & Project Selection Issue

Even after changing the background color in the cloud after exporting from Figma, the update doesn’t apply. Additionally, in the previous version, the last selected project was remembered during export, but now I have to select it every time, which is inconvenient. Please address this issue as soon as possible.

External URLs do not work in Build Prototype. Entering them and pressing Add hotspot will also initialize them.