Windows Terminal version
1.25.923.0 (Preview) – but the issue is NOT limited to Windows Terminal.
Windows build number
10.0.26200
Other affected environments
- Windows Terminal (Preview & Stable)
- Classic Console Host (conhost.exe) used by PowerShell 5.1, PowerShell 7.x, and CMD
- Any application that relies on the legacy console rendering for text output
Shells affected
- PowerShell 7.6.1
- Windows PowerShell 5.1
- Command Prompt (CMD)
- (The issue is shell-agnostic; it appears in any console host)
Steps to reproduce
- Open any of the above shells in any console window (Windows Terminal or legacy conhost).
- Type or output a simple Persian word:
"سلام".
- Observe the on-screen rendering.
Expected Behavior
The text should display correctly with right-to-left order and connected letterforms: سلام.
Actual Behavior
The letters appear in reversed order (left-to-right) and disconnected. "سلام" (s-l-a-m) is rendered as "مالس" (m-a-l-s). Characters are isolated instead of using their contextual joining forms.
Copying the text from any console and pasting it into an editor yields the correct logical order (سلام), proving the internal memory buffer is correct, but the display output is reversed and lacks complex script shaping.
Additional context
This is a long-standing issue across the entire Windows console ecosystem, affecting Persian, Arabic, and other right-to-left scripts. While Windows Terminal introduced a modern rendering stack, even in the Preview version the RTL text layout logic seems absent or broken. Because the legacy conhost has no shaping support at all, and Windows Terminal does not yet handle it either, all Persian users are unable to read any shell output natively. This severely impacts adoption and usability. Please prioritize investigating bidirectional text rendering and font shaping (Uniscribe/DirectWrite) for RTL scripts in the Windows Terminal rendering pipeline, as it would also set a standard for future console improvements across the board.
Windows Terminal version
1.25.923.0 (Preview) – but the issue is NOT limited to Windows Terminal.
Windows build number
10.0.26200
Other affected environments
Shells affected
Steps to reproduce
"سلام".Expected Behavior
The text should display correctly with right-to-left order and connected letterforms:
سلام.Actual Behavior
The letters appear in reversed order (left-to-right) and disconnected.
"سلام"(s-l-a-m) is rendered as"مالس"(m-a-l-s). Characters are isolated instead of using their contextual joining forms.Copying the text from any console and pasting it into an editor yields the correct logical order (
سلام), proving the internal memory buffer is correct, but the display output is reversed and lacks complex script shaping.Additional context
This is a long-standing issue across the entire Windows console ecosystem, affecting Persian, Arabic, and other right-to-left scripts. While Windows Terminal introduced a modern rendering stack, even in the Preview version the RTL text layout logic seems absent or broken. Because the legacy conhost has no shaping support at all, and Windows Terminal does not yet handle it either, all Persian users are unable to read any shell output natively. This severely impacts adoption and usability. Please prioritize investigating bidirectional text rendering and font shaping (Uniscribe/DirectWrite) for RTL scripts in the Windows Terminal rendering pipeline, as it would also set a standard for future console improvements across the board.