Seeing fill and stroke colors in layer preview thumb, but not on the artboard

Hello. A friend sent me a link to Graphite this morning so bear in mind this is from the perspective of a brand new user who has never touched the software. As such, my apologies if this is NOT a bug, and just some kind of default view setting that I'd have to know to change. (If that is the case, you might consider NOT defaulting to such.)

The issue I am having is that I can use the tools, and draw the shapes, but I do not see the fills or strokes showing up on my artboard. I can only see them in the thumbnail preview on the layer. On the artboard, I see the faint blue line of the shape when I have it selected. I am on the latest version of Chrome, MacOS Tahoe 26.5.2.

No source file, test, or entry point is named. First reproduce the issue in the latest Chrome on macOS using filled and stroked shapes, then compare the artboard rendering with the layer thumbnail; done means both fills and strokes appear on the artboard while the shape is selected and unselected.

Written by the indexing model from the issue text.