Setting the value of an unfocused Input causes the first character to not display

[davep]

Consider this code:

from textual.app     import App, ComposeResult
from textual.widgets import Header, Footer, Input

class InputPopulate( App[ None ] ):

    CSS = """
    Screen {
        align: center middle;
    }
    """

    def compose( self ) -> ComposeResult:
        yield Header()
        yield Input( placeholder="Data will go here" )
        yield Footer()

    def on_mount( self ) -> None:
        self.query_one( Input ).value = "This is a test value"

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

After being run up, the Input looks like this:

once focus is moved to it, however, the full value is shown:

[davep]

Possibly has some overlap with #1443?

[mrossinek]

Possibly has some overlap with #1443?

I had a quick look but that issue does not seem to be related. At least picking a placeholder for Input longer than one character still has the same behavior for the entire string as described in that issue (i.e. the first character does not get handled differently)

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