Empty Markdown from sidebar icons + nothing copied from "Collapse" button (grok.com)

**Description:**
On grok.com, many sidebar/icon elements produce almost-empty or broken Markdown, and some interactive buttons copy nothing at all.

Real failing examples:

1. Clicking any sidebar icon (Imagine, Voice, Projects, etc.)
→ Wired empty lists

Or, clicking in the sidebar's empty space:
````

* [

](/)

* [

](/?voice=true)

* [

](/imagine)

* [

](/project)
````

2. Clicking History / hovering some chat history items
→ Pseudo-element junk: `<::before>`

3. Clicking the "Collapse" button in the chat UI
→ Debugger detaches, but clipboard stays empty (nothing gets copied)

One positive note: text links like the "Conversations" tab work perfectly → clean `[Conversations](…)` Markdown

**Steps**
→ https://grok.com → full load → Ctrl+Shift+M → click the problematic elements above.

Thanks! The extension is awesome when it works — just needs a little love for these empty/icon-only cases on heavy JS sites.