pullRequestDescriptionGeneration instructions

[jj-at-fdt]

I have installed the GitHub Pull Request extension and am using the "Generate with Copilot" action.

My current settings are as follows:

"github.copilot.chat.pullRequestDescriptionGeneration.instructions": [
    {
        "file": ".github/copilot-pullRequestDescription-instructions.md"
    }
],

According to the Output log, the instructions file is being picked up:

2025-05-29 10:47:13.605 [debug] Collect instructions from file: .github/copilot-pullRequestDescription-instructions.md
2025-05-29 10:47:16.125 [info] message 0 returned. finish reason: [stop]
2025-05-29 10:47:16.125 [info] request done: requestId: [e0bb626c-33f5-4f41-9c8e-e2fd0fc5092a] model deployment ID: []

However, I’m experiencing an issue where the generated pull request titles and descriptions often do not follow the provided instructions. The instructions file contains a specific format and examples, but Copilot seems to ignore these and generates descriptions in a different style.

It’s unclear to me whether this is an issue with the GitHub Pull Request extension or with Copilot itself.
I would expect Copilot to adhere to the format and examples provided in the instructions file. Sometimes, it seems to work when I click generate again. But these are very rare cases.

Environment details:

• Extension version: 0.111.2025052904
• VSCode Version:
• OS: Windows 11
• Repository Clone Configuration (single repository/fork of an upstream repository): 1.101.0-insider
• Github Product (Github.com/Github Enterprise version x.x.x): Github.com Enterprise subscription

[vuon9]

I encountered the same issue: when using text, the requirement seems to apply to the generated content, but not when using instructions from a file in $HOME folder. However, the demo in VSCode release with using file should be more clear about the instruction template (if it has), that could make it easier to understand.

[alexr00]

I'm not able to repro this. Please let me know if you're still seeing it!