The blog named Novice secrets has discovered a bug that allows to delete groups created on a articular version 2.12 and above. However, the groups can only be deleted. Here's how the hack works, as explained by the blog:
Also Read: WhatsApp delete groups available now: What it gets right, how it works and when it doesn't work
-- Now go to Apps under Settings.
-- Choose WhatsApp and Force Stop.
-- Now go to Date & Time under Settings.
-- Disable Automatic Date & Time.
The feature allows users to recall messages, both in group or individual chat. However, there is a catch. Messages sent. This becomes a problem when you want to delete any message after the the group has been deleted by the bug. WhatsApp has no solution to this problem but a Spanish blog website claims to have.