Bug Report: Frontmatter Inconsistently Rendered in "Pin as Reference" Pane

[naingyeminn]

Description

When opening a note using the Pin as Reference action, YAML frontmatter (metadata block) is not processed or formatted using the app's styled properties block (like in the main editor view). Instead, it displays as raw plain text/markdown delimiters (---) and large monospace text in the pinned reference pane.

Steps to Reproduce

1. Create or open a note containing standard YAML frontmatter at the top (e.g., author, status, year).
2. Right-click on the note's tab title bar.
3. Select Pin as Reference from the context menu.
4. Observe the newly created reference pane on the right.

Expected Behavior

The pinned reference pane should render the frontmatter in the same styled metadata/properties block as the primary editor pane.

Actual Behavior

• Primary View (Left): Frontmatter is correctly parsed into a styled metadata card/container with light gray background and subtle key-value text formatting.
• Pinned Reference View (Right): Frontmatter fails to parse as metadata and renders as raw text, showing horizontal rules (---) and being formatted as Heading Level 2.

Environment / Visuals

• Observed In: Dual-pane / Reference split view mode (as seen in provided screenshots).

[adibhanna]

Thanks for the sharp report, the screenshots made this a quick hunt.

Root cause: the reference pane builds its own CodeMirror extension list, a hand copy of the main editor's markdown bundle, and that copy was missing the frontmatterStyle plugin that tags the leading YAML block. Without those tags the properties-card styling never engaged, so the raw --- fences showed and the markdown parser treated the properties above the closing fence as a setext Heading 2, which is exactly the giant text in your screenshot.

Fixed in 3321728 by adding the missing plugin to the pane, so both panes now share the identical rendering path for frontmatter. Verified by driving the built app through your exact steps (note with YAML frontmatter, right-click the tab title, Pin as Reference): the pinned pane now renders the same compact properties card as the primary editor, in both its Edit and Preview modes.

The fix ships in v2.25.0.