[Bug] Hard crash with unresponsive input handling

Here's a summary of the issue for reference:

Issue: Claude Code hard crashes — UI freezes, no keys respond, window must be force-closed

What happened:

• During this session, a heif-convert command was run to convert an iPhone HEIC photo to PNG
• The command was dispatched as a background task and hung — it did not complete within 2+ minutes

(previous identical conversions finished in seconds)

• Claude Code became unresponsive during/after the hanging background task, requiring the window to

be closed

• This occurred multiple times in the session

Likely cause:
A long-running or stalled background shell process (the hung heif-convert) appears to have caused
Claude Code's UI to lock up entirely — no keyboard input was accepted and the window had to be
forcibly closed.

Relevant context:

• Platform: Fedora Linux (kernel 6.17.12)
• Source file: HEIC image mounted via ifuse from an iPhone at

/tmp/iphone/DCIM/100APPLE/IMG_0121.HEIC

• The mount point or file read may have stalled, causing the subprocess to hang indefinitely and

lock the UI

The feedback has been submitted.

Bug Description
This conversation has hard crashed several times. no keys work. have to close window.

Environment Info

• Platform: linux
• Terminal: vte-based
• Version: 2.1.63
• Feedback ID: 0553bf7f-cdda-401c-b7b3-d630319d2bb1

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /home/blueaz/.local/share/claude/versions/2.1.63 (expected in multi-process scenarios)\n    at oN$ (/$bunfs/root/claude:2435:2100)\n    at URA (/$bunfs/root/claude:2435:1211)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-03-02T07:48:15.611Z"}]