vscode-pull-request-github: Unable to Add Comments in PR using GitHub Pull Requests Extension in VSCode

I’m using the GitHub Pull Requests extension in Visual Studio Code to review pull requests. I’ve been assigned a PR, and I partially reviewed it about a week ago. However, today, when I tried to continue my review, I ran into an issue. Specifically, I can’t add comments near the lines in the PR - The + button at the start of each line is just greyed out.

Also, whenever I try to click the “Add File Comment” button, I receive the following message: The cursor must be within a commenting range to add a comment.

I was able to comment just fine a week ago, so I’m puzzled about what might have changed or what I might be doing wrong. I tried the following:

• restarted the vs code and restarted my system
• uninstalled and reinstalled the extension
• Signed out of my GitHub account and signed in again

Has anyone else experienced this issue or have any suggestions on how to resolve it?

This is the output of Help: About:

Version: 1.83.0 (user setup)
Commit: e7e037083ff4455cf320e344325dacb480062c3c
Date: 2023-10-03T16:12:16.321Z
Electron: 25.8.4
ElectronBuildId: 24154031
Chromium: 114.0.5735.289
Node.js: 18.15.0
V8: 11.4.183.29-electron.0
OS: Windows_NT x64 10.0.22621

I’m currently using version 0.74.0 of the extension GitHub Pull Requests and Issues in VS Code.

Any help is appreciated.