Input.Date min/max constraints not enforced in Outlook Mobile

Target Platforms

iOS

SDK Version

Outlook version: 4.2515.0, Adaptive Card version: 1.0

Application Name

Microsoft Outlook Moobile

Problem Description

When using Input.Date in an Adaptive Card (v1.0 for Outlook), the min and max constraints are respected in Outlook Desktop, but not enforced on Outlook Mobile.

Details:
Users can select or manually enter dates outside the allowed range even when min and max are defined.
This leads to potential submission of invalid or unsupported values, causing confusion or backend validation failures.
This behavior breaks consistency between platforms and deviates from expected Adaptive Card spec behavior.

Screenshots

No response

Card JSON

{
    "$schema": "http://adaptivecards.io/schemas/adaptive-card.json",
    "type": "AdaptiveCard",
    "version": "1.0",
    "originator": "<<ActionableEmailRegistrationId>>",
    "hideOriginalBody": true,
    "body": [
        {
            "type": "TextBlock",
            "text": "Please select a start date"
        },
        {
            "type": "Input.Date",
            "id": "startDate",
            "value": "2025-05-08",
            "min": "2025-05-03",
            "max": "2025-06-08"
        },
        {
            "type": "Container",
            "id": "353b659f-b668-fac0-5b7f-5d2f1bdb46ac",
            "padding": "Default",
            "items": [
                {
                    "type": "ActionSet",
                    "actions": [
                        {
                            "type": "Action.Http",
                            "title": "Approve",
                            "method": "POST",
                            "url": "<<ActionEndpoint>>",
                            "headers": [
                                {
                                    "name": "Content-Type",
                                    "value": "application/json"
                                },
                                {
                                    "name": "x-ms-action-prop-ActionType",
                                    "value": "CSPDeliveryPlanApproveActionUAT"
                                }
                            ],
                            "body": "{ \"startDate\": \"{{startDate.value}}\" }",
                            "isPrimary": true,
                            "style": "positive"
                        }
                    ]
                }
            ],
            "spacing": "None",
            "separator": true
        }
    ],
    "padding": "15px"
}

Sample Code Language

No response

Sample Code

No response

Start by reproducing the supplied Adaptive Card JSON with Input.Date on Outlook Mobile for iOS, using the stated Outlook and Adaptive Card versions. Compare its min/max behavior with Outlook Desktop and inspect the mobile Input.Date handling. Done means dates outside 2025-05-03 through 2025-06-08 cannot be selected or submitted.