Mobile web sidebar width changes when Working or Settled expands#27477
What happened
On the mobile web interface in iPhone Safari, expanding or collapsing the Working or Settled section changes the sidebar width. The supplied recording shows the amount of the thread visible beside the sidebar changing with the section state.
Diagnosis
In the source snapshot I checked, the mobile sidebar width is set to calc(100vw - spacing(3)) and does not depend on whether Working or Settled is expanded. The recording shows different widths, but I could not confirm the cause. The source snapshot is current main at 305a90d, checked shortly before the recording; it may not exactly match the reported build.
Steps to reproduce
- Open app.t3.codes on iPhone Safari.
- Open the sidebar.
- Expand and collapse Working or Settled.
- Observe that the sidebar width changes with the section state.
Version
0.1.6-nightly.20261030.3917
Environment
iPhone, Safari, iOS 27.2. Mobile web. Server connection details unknown.
Evidence
https://github.com/user-attachments/assets/cbf0c966-a29d-4bee-8012-d2a93ff62595
Related issues
#1924 concerns a missing new-thread button on mobile and does not cover sidebar width changing when sections expand.
Fix applied or workaround
None known.
Filed by
GPT-6 via Codex triage