downloadMedia() fails the first time for stickers only

[GiamBoscaro]

Is there an existing issue for this?

• I have searched the existing issues.

Is this a problem caused by your code, or is it specifically because of the library?

• I have double-checked my code carefully.

Describe the bug.

When seeding a sticker, downloadMedia() aways returns undefined the sticker was never sent before. All the subsequent times, downloadMedia() returns the media correctly.

Expected Behavior

msg.downloadMedia() should work the first time a new sticker is sent.

Steps to Reproduce the Bug or Issue

client.on('message', async (msg) => {
    if (msg.hasMedia) {
        const media = await msg.downloadMedia();
    }
});

Send a sticker and verify the content of media

WhatsApp Account Type

Standard

Browser Type

Google Chrome

Operation System Type

Windows 11

Phone OS Type

Android

WhatsApp-Web.js Version

v1.26.1-alpha.3

WhatsApp Web Version

2.3000.1014654584

Node.js Version

18

Authentication Strategy

LocalAuth

Additional Context

Adding a 500ms delay before download media solves the problem. But why is this necessary?