Markdown renderer with OPENCODE_EXPERIMENTAL_MARKDOWN is cutting the last row in tables

[shivambaku]

Description

Hi Team,

I noticed that all tables have the last row cut when using the OPENCODE_EXPERIMENTAL_MARKDOWN flag.

Plugins

No response

OpenCode version

1.1.65

Steps to reproduce

1. Use OPENCODE_EXPERIMENTAL_MARKDOWN=true opencode command at the terminal.
2. Call any prompt that will output a markdown table. Ex: "Make a table with 3 rows."
3. You will see that it will only show 2 rows (besides the header). Raw text shows it indeed made 3 rows.

Screenshot and/or share link

## Assistant (Build · claude-sonnet-4.5 · 2.3s)

Here's a table with 3 rows:

| Column 1 | Column 2 | Column 3 |
|----------|----------|----------|
| Row 1    | Data     | Info     |
| Row 2    | Data     | Info     |
| Row 3    | Data     | Info     |

Operating System

macOS 26.2

Terminal

Wezterm

[github-actions]

This issue might be related to existing table rendering discussions. Please check:

• Feature Request: Fix table border rendering - box-drawing characters appear disconnected #12164: Table border rendering with box-drawing characters
• [FEATURE]: Add user-friendly display for markdown tables #11223: User-friendly display for markdown tables

These may provide additional context for your issue.

[doomsday616]

Tested the beta (0.0.0-beta-202603021355) — simple tables were fixed, but complex ones (7+ columns, emoji, CJK mix) still lose the last row. Reverted back to stable 1.2.15 with OPENCODE_EXPERIMENTAL_MARKDOWN=1 and instructed the AI agent to always append an empty padding row to every table so the bug eats the dummy row instead of real data. Not ideal but it works.

[AndreasRJW]

I can confirm this issue with 1.2.15.

[kommander]

Should be better on latest beta