Using the application builder is problematic if the destination folder is monitored by syncing tools such as Google Drive (Backup&Sync), Onedrive, etc.
During building, there are tons of file operations in rapid sequence, potentially crashing the sync tools or causing false file conflicts (recent example).
To avoid these issues, I wonder if the building steps could be forced to take place in the temporary folder, followed by a final clean move to the destination. My guess this would make building more stable and compatible with external folder syncing tools.