microsoft/Terminal

Add ability to disable OSC 9 progress bar in tab and taskbar

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#19121 opened on Jul 11, 2025

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Area-UserInterfaceHelp WantedIssue-FeatureIssue-TaskPriority-3Product-Terminal

Description

Description of the new feature

I find the progress bar showing up in various tools (like when Rust is compiling) to be very distracting.

Furthermore often it gets stuck, perhaps this is related to the keyboard cursor blinking rate being disabled -- as there are similar Windows bugs related to that specific feature.

Still, it doesn't seem like we can disable this taskbar progress bar on Windows. So it would be nice if we could disable it in the Terminal.

Proposed technical implementation details

No response

Contributor guide

Tech stack
cpp
Domain
desktop
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
C++ programmingWindows Terminal codebaseOSC escape sequences
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40
Research direction
Investigate how OSC 9 sequences are handled in the terminal renderer and settings. Look for existing settings patterns to disable other escape sequences, such as in SettingsSchema or TerminalSettings. Propose a new boolean setting, e.g., 'disableOsc9ProgressBar', and implement a check in the renderer or input handler to skip OSC 9 updates when disabled. Ensure the setting is exposed in settings.json and UI if applicable.