@razibal thanks for reporting, https://github.com/NodeBB/NodeBB/issues/10692
This started happening after the refactor to change tag storage to be by category https://github.com/NodeBB/NodeBB/pull/8938/files
I tried to add a font awesome icon in the tags and now if i want to delete it it comes back
How can i delete it ?
Please open an issue at https://github.com/NodeBB/NodeBB/issues with reproduction steps