[BUG] CC running in container exits after 1st or 3rd shell command (!)

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?

as of v2.0.65, Claude Code "native" binary running in a Docker container/devcontainer on Linux exits after exactly the 3rd shell command (! <whatever>) completes and exits (crashes, i presume?) - at least with bash in Debian based containers. it doesn't matter which commands one invokes, CC exits even after true/false/ sleep 10 complete. e.g.:

$ time claude

 ▐▛███▜▌   Claude Code v2.0.65
▝▜█████▛▘  Haiku 4.5 · Claude Team
  ▘▘ ▝▝    /work/claude-code

! true 
  ⎿  (No content)

! true 
  ⎿  (No content)

! true 
  ⎿  (No content)

───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
>  
───────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────
  v2.0.65 | claude-haiku-4-5-20251001 | 6k : 1k / 200k (3%) | /work/claude-code                                                                                                                           Thinking on (tab to toggle)
                                                                                                                                                                                                                             0 tokens

real    0m18.199s
user    0m0.059s
sys     0m0.043s
$

this is a regression:

• v2.0.42 - 2.0.54 - it was possible to invoke multiple commands without CC crashing in this range of versions. haven't tried reproing with earlier versions now, but i don't recall such nonsense.
• v2.0.55 - v2.0.59 - usually exits after the _very 1st shell_ command (e.g. ! true). if you switch model model first - sometimes it survives until the 3rd command and then exits.
• v2.0.60 - v2.0.65 (at least) - let you execute exactly 3 shell commands, will wait until the 3rd one completes (even if it takes time) and then will exit.

there are no hooks configured in the system, no MCPs, no agents, no skills, no custom /commands, nada. happens equally with and without statusline command. happens with empty $HOME/.bashrc/$HOME/.profile. happens with any model. the bug is 100% reproducible in the relevant version ranges (see above). the contents of $HOME/.claude/debug/<UUID>.txt are very pedestrian, no errors, don't always end on the same thing.

no idea if this happens with npm-installed CC or outside Docker containers, and can't easily try that out (IT constraints).

this bug is a significant impediment to recent CC versions usage.

What Should Happen?

Claude Code should continue working even if the user executes multiple ! shell commands, not crash taking the entire context down.

Error Messages/Logs

nada! the "native" binary silently exits, no errors in ~/.claude/debug.

Steps to Reproduce

1. start latest "native" Claude Code in a Docker container on Linux (e.g. custom devcontainer).
2. issue 3 shell commands, e.g. ! false, ! pwd, ! true.
3. observe CC exiting back to shell (presumably crashing?).

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

v2.0.54

Claude Code Version

2.0.65 (Claude Code)

Platform

Anthropic API

Operating System

Ubuntu/Debian Linux

Terminal/Shell

Other

Additional Information

_No response_