Backspace forces cursor to end of text (Firefox)

antonmedv / codejar

An embeddable code editor for the browser 🍯

https://medv.io/codejar/

MIT License

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Backspace forces cursor to end of text (Firefox) #115

Open nalgeon opened 6 months ago

nalgeon commented 6 months ago

Repro steps

Using Firefox 124/125, visit https://medv.io/codejar/, focus in the editor and delete all the code.

Enter the following code:

const greet = (name) => {
    console.log(5);
}

greet("World");

Place the cursor after the 5 and hit the Backspace key on your keyboard.

Expected

Deletes 5 and cursor remains between parentheses.

Actual

Deletes 5 and cursor jumps to the end of the file.

Environment

Firefox 124/125, Windows/macOS.

Does not reproduce in Chrome or Safari.

GDur commented 5 months ago

I don't yet have the solution but I might have a good starting point: In the save function, Firefox seems to "think" anchorNode, focusNode and editor are the same. In Chrome it works correctly and identifies them as different.

The log In Chrome:

The log in Firefox: