switch to/from plan mode can be messed up when using multiple instances at once.

What version of Codex CLI is running?

0.134

What subscription do you have?

Pro

Which model were you using?

5.5low/high

What platform is your computer?

debian

What terminal emulator and version are you using (if applicable)?

sakura

Codex doctor report

What issue are you seeing?

switch to/from plan mode can be messed up when using multiple instances at once.

What steps can reproduce the bug?

just open up multiple clis then switch plan mode a couple of times, you will see

What is the expected behavior?

not to be messed up by itself

Additional information

_No response_