[Bug]: Caret Drift BUG repeating even after updating to ver 1.6.1

Component

UI (ui.*)

Severity

P1 - High (major feature broken)

Shiny Version

1.6.1

Python Version

3.11.11

Minimal Reproducible Example

from shiny import App, Inputs, Outputs, Session, render, ui


app_ui = ui.page_fillable(
    ui.layout_columns(
        ui.card(
            ui.card_header("Python Code Editor"),
            ui.input_code_editor(
                "code",
                label="Enter Python code:",
                value="def greet(name):\n    return f'Hello, {name}!'\n\nprint(greet('World'))",
                language="sql",
                height="200px",
            ),
        ),
        ui.card(
            ui.card_header("Editor Value"),
            ui.output_text_verbatim("value", placeholder=True),
        ),
        col_widths=[6, 6],
    )
)


def server(input: Inputs, output: Outputs, session: Session):
    @render.text
    def value():
        return input.code()


app = App(app_ui, server)


if __name__ == "__main__":
    app.run()

Behavior

I have noticed that the BUG has been marked as fixed for shiny 1.6.1 but after testing, it looks like it has not been properly fixed.

Current: As I'm typing on the code editor, caret drifts to the right and becomes visually separated from the actual text insertion point. Caret DOES NOT match the actual insertion point where it should be.
Expected: The caret should stay visually aligned with the true insertion point while typing, regardless of how long the current line is.

Error Messages (if any)

Environment

Windows 11
Chrome 147.0.7727.102(Official Build) (64bit)

No source file or test is named. Start by running the supplied minimal example and inspect the UI implementation behind input_code_editor while reproducing caret drift on a long line. Done means the caret remains visually aligned with the true insertion point during typing in the reported environment.