Could you have somehow hidden Workspace from the Explorer? Try these steps and let me know if it resolves your issue: In your game, click on the Model ribbon at the top of your screen. On the rightmost side of the tab, click on Advanced > Service Workspace might be in the Service list. If it is, just select it and click the Insert button.
You can fix this by resetting your layout: use the Quick Open menu Ctrl + P and type >reset view until you see the option in the list. Select it and restart Studio when prompted.
The core job of Workspace is to hold objects that exist in the 3D world, effectively BaseParts and Attachments. While such objects are descendant of Workspace, they will be active. For BaseParts, this means they will be rendered, and physically interact with other parts and the world.
Your graphics mode is set to NoGraphics, go to Studio’s rendering settings and force it to something else like Vulkan or DirectX. If that doesn’t work report it as a bug.
You can access the Workspace in the Explorer panel, where you can organize and manage the elements of your game by creating hierarchies, grouping objects, or changing their properties.
Drag and drop objects into your workspace, move and rotate to get things just right, and texture and polish your world to get the right look. Syntax highlighting, code completion, and inline documentation let you script easily.
Before you jump in and begin building experiences, let's take a moment to walk through Studio's essential UI. While this overview provides a solid foundation to get started, there are many additional windows and tools that you can discover and customize in the Studio interface.