When I try to use the ShareExtension from Safari, the pop-up seems to pop under the browser or website content and not fully render. I can see the general shape of the modal but there's no visible content and nothing to click or escape to close it. When that happens, the browser window will not accept any keyboard or mouse input and I have to quit and re-open to resolve the problem.

Environment is a macOS 15.1.1, Safari 18.1.1, on an M4 Mac mini.