Queueing up prompts causes gibberish in visual output

What version of Codex CLI is running?

0.112.0 (I confirmed the bug in previous versions too)

What subscription do you have?

Pro

Which model were you using?

GPT-5.4 xhigh (Same issue for other models)

What platform is your computer?

Windows

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

Developer PowerShell

What issue are you seeing?

When a bunch of prompts gets queued, for example 5-10 prompts.
It initially shows up correctly as queued, but after a few seconds, the output turns into gibberish (See image)

<img width="875" height="182" alt="Image" src="https://github.com/user-attachments/assets/08b78769-6317-42c2-a5f8-5d960c1e7312" />

What steps can reproduce the bug?

Start prompt.
Queue 10 more prompts
Wait a few seconds

Now the output looks something like this (sometimes a lot worse):

<img width="1094" height="228" alt="Image" src="https://github.com/user-attachments/assets/00e6ea07-61f2-4cd4-8fef-de00d0ba39c8" />

What is the expected behavior?

That correct text is shown, listing the queued prompts just like it does when queue is initially established.

Additional information

The problem goes away by itself once there is only a few queued prompts remaining (in my test, once only 3 remaining prompts are queued, the output becomes correct again)

If then queuing more prompts again, the problem comes back after a minute.