If we have multiple channel, we could have put the same thumbnail (or simular) on several accounts (example, company logo).

When added in Postiz, we have the channel thumbnail which is gathered from the social network and the small social network logo put on it.

For example, if you have LinkedIn + GMB + Blusky (3x blue logo) with the same thumbnail, the result in Postiz is 3 pictures which are very similar.

A thumbnail customization (new picture? border color? other...) could help to make difference quickly.