United Kingdom, May 15 -- Instagram has launched a new feature called Instants, but many users are already expressing frustration after accidentally sharing photos they did not intend to post.

The feature is designed to encourage users "to share in the moment - with spontaneous, unfiltered photos", according to parent company Meta.

Instants appear within Instagram's direct messaging inbox and allow users to take a photo that is instantly sent to followers after the capture button is pressed.

However, many users said they did not realise the image would be immediately shared and ended up accidentally posting test selfies or unintended pictures before noticing the app's undo option.

The feature includes a short window allowing users to ...