[BUG] Code tab Overview heatmap misses days with active project usage
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?
The "Overview" panel under the Code tab (Home screen) shows a usage heatmap, but it's missing days where I had real, substantial activity in a project session.
Repro:
- A project session has an active conversation with a message timestamped "14 hours ago", and the system clock at the time of that screenshot reads 10:45 AM on 24-Jul-26 (so the message falls on 24-Jul-26, i.e. "yesterday" relative to the heatmap screenshot).
- The Overview heatmap screenshot was taken within minutes of the session screenshot (same sitting), and the square for 24-Jul-26 shows no activity (empty/unfilled), despite the session clearly being active that day.
- Screenshots were taken close together in time, so this isn't a timezone or day-boundary misread.
Expected: the heatmap should reflect activity from all Code sessions, including this one.
Actual: the day is shown empty despite verified activity.
Attached: two screenshots (project/session names and content redacted for confidentiality) — one showing the session's timestamp/clock, one showing the heatmap gap for the same day.
What Should Happen?
The heatmap should say that there was activity on yestarday as print screen shows
Error Messages/Logs
Steps to Reproduce
- work on a single session for many days.
- those many days don't appear in heat map after some time.
Claude Model
Opus
Is this a regression?
I don't know
Last Working Version
_No response_
Claude Code Version
Claude 1.24012.1 (0adcae) 2026-07-21T20:59:53.000Z
Platform
Anthropic API
Operating System
Windows
Terminal/Shell
Other
Additional Information
<img width="1562" height="1032" alt="Image" src="https://github.com/user-attachments/assets/d902304e-764f-4c75-b016-52ff8e6400a8" />
<img width="1920" height="1080" alt="Image" src="https://github.com/user-attachments/assets/e2499a37-5950-4b6c-b41e-199fd84443e2" />