Windows Terminal version

1.18.1462.0

Windows build number

10.0.19045.3208

Other Software

I've provided a minimal standalone repro here to eliminate dependencies on anything other than Terminal.
But for completeness: this was discovered in the context of Clink.

Steps to reproduce

This is a regression in 1.18; the problem does not exist in 1.17 and earlier.

Minimal repro program is available at https://github.com/chrisant996/repro_enable_mouse_input.
The repo also includes a pre-built code-signed Repro.exe executable.

See the Readme.md file in that repo for full details and repro instructions.

1. Start Windows Terminal 1.18
2. Run the Repro.exe program from the repro_enable_mouse_input repo (you can build it yourself from the sources, or you can run the pre-built code-signed copy)
3. Move the mouse over the terminal window; you should see no output
4. Click the primary mouse button on the terminal window; you should see no output
5. Hold Ctrl+Alt and move the mouse or click the mouse button

Expected Behavior

• You should see output acknowledging that ReadConsoleInputW received mouse input records.

Actual Behavior

• Terminal 1.18 -- there is no output (incorrect behavior).
• Terminal 1.17 -- the output reports received mouse input records (correct behavior).