Hey, thanks for the report.
There’s a known issue with webview panels: Webview-based extensions fail to render in the bottom panel, but work in the side bar. Webview-based extensions don’t render correctly in the bottom panel, but they work in the side bar.
I’d also recommend checking the official VS Code docs on extension development:
Cursor supports VS Code extensions via the Open VSX registry with additional verification:
Share a bit more detail and I’ll help you narrow it down.