[Bug] Linux + Electron + Monaco: Unable to use ctrl+\ when monaco instance is focused

[varun-dc]

Reproducible in vscode.dev or in VS Code Desktop?

• Not reproducible in vscode.dev or VS Code Desktop

Reproducible in the monaco editor playground?

• Not reproducible in the monaco editor playground

Monaco Editor Playground Code

No response

Actual Behavior

In an electron app running on Linux (I tested Ubuntu and ArchLinux), the keybinding, ctrl+\, requires a second invocation for it to trigger the associated action. Please note, I'm referring to my application code's ctrl+\ keybinding not being invoked on the first key press, not any keybinding Monaco may have.

Specifically, if I have a HTML page in electron with a Monaco instance, if I click the instance to give it focus (such that I can type in it as an editor) I'm unable to trigger the ctrl+\ action without pressing ctrl+\ twice.

However, if I do not focus the Monaco instance, I am able to trigger ctrl+\ action with just one press.

Expected Behavior

The programmer should be able to unbind whatever binding Monaco has and Monaco should provide a way for allowing the host application to bind ctrl+\ without issue.

Additional Context

Please find a complete reproduction of this issue here:
https://github.com/varun-dc/electron-react-boilerplate-monaco-mod-backslash-bug on the bug-mod-backslash branch.

Steps,

1. Run the application with npm i and then npm start
2. Once opened, click the Monaco instance in the middle of the page, tap ctrl+\ (or cmd+\ if on Mac) and notice nothing happens. Tap again, notice app goes fullscreen
3. Click outside the Monaco instance, anywhere else in the application window, and tap ctrl+\ (cmd+\) and repeat. Notice there is no need to tap a second time for the fullscreen action to trigger.
4. Click back on the Monaco instance and repeat the key press, notice the first press doesn't trigger the action