Delivery report. A message hasn't been delivered to mustNotHave filter

A message (in our case, a picture) arrives in the source chat. You notice that this message has not arrived in the destination chat.

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Copy the link to the message in the source chat that did not arrive in the destination chat.

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Enter the /track command in the chat with the bot.

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The bot has responded to the command. Paste the link to the message you just copied.

A link to the message has been added to the chat with the bot.

We received a delivery report for this message: the forwarding settings had a filter prohibiting images. And the message we are checking is the image.

Indeed, the forwarding settings have a prohibiting filter mustNotHave - <photo>, which prohibits messages with pictures from arriving.