By some query, using ytsr I get information about the video (link, thumbnail, etc).

Then, using ytdl-core, I download the audio of this video and return the cropped thumbnail (320x320 - telegram thumbnail standards)

When trying to send an audio message, NOT MEDIA, the thumbnail is shown, all the metadata of the audio recording is correct, such as I specified.

But when I send multiple audios as media, the thumbnail is not displayed, although other metadata, such as the duration or title of the audio, is displayed correctly.

P.S: I tried a variety of methods, made a request for a link to an image, saved to a clipboard, and much more, even used third-party libraries like node-id3 - nothing helps. Media does not display thumbnail.

You can say that this is a bug in telegram or the module that I use (telegraf), but there is one catch - my bot, when receiving a link to a track in spotify, gets information about it using the spotify-url-info module, which also returns thumbnail. And now this thumbnail is displayed in the media.

P.S: I saved both thumbnails, they are identical, from file type to size and bit color.

a function that, by query, returns audio and a thumbnail

Sending media

Result. The first is just text, he found the track by query. The second is a link to spotify, information about which was returned by the spotify-url-info module

The first photo returned by the ytsr module in my query. I saved it to check if everything is the same with it.

Second photo. Telegram displays her thumbnail, although it is the same size as the first one

In the media, all audio recordings must have a thumbnail.