[BUG] In Desktop, no longer possible to leave plan comments on code blocks

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

In Claude Code Desktop, since updating to version 1.2581.0 (f10398) 2026-04-14T17:16:40.000Z I'm no longer able to leave inline comments in Plan view within code blocks. This worked in the version right before this one, but now when I select text in a code block, it no longer brings up the "Comment" bubble.

What Should Happen?

I should be able to leave inline plan comments within code blocks, not just to prose. It's very useful to, for example, ask about changing a specific property in a generated interface example (in the plan doc, not the diff after coding). This used to work in the version right before 1.2581.0, and I was super happy about it.

Error Messages/Logs

Steps to Reproduce

1. Ask Claude Code Desktop, in Plan mode, to plan out some code that has explicit code blocks (e.g. a TypeScript interface)
2. Open the Plan doc with the code block
3. Select text within the code block

Expected

• Comment button pops up and you can leave an inline comment (like it worked before)

Actual

• No Comment button pops up

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

One that was available April 13–14

Claude Code Version

1.2581.0 (f10398) 2026-04-14T17:16:40.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Other

Additional Information

_No response_