URL parameter in flask app is showing up 1 form submission late

from datetime import date
from flask import Flask, render_template, request

app = Flask(__name__)

@app.route('/search')
def search():
    search_date = request.args.get(
        'search-date',
        date.today(),
        type=date.fromisoformat
    )

    # Your filter function here.

    return render_template('search.html', **locals())