Wrapping blocks changes Block ID and Block Class.
Tested on 2 installations, everything is up to date.
On one of them, it also adds a removed Virtual Class to the block after wrapping.
Not sure what’s that triggering. Tested that behaviour with freshly inserted blocks as well.
Indeed, I have been able to reproduce this issue on my end and can confirm it is a bug.
It seems a Virtual Class is added when link copied block is active.
Moving this to confirmed bugs.
Please bear with us while we find a fix for this.
Thank you for reporting this and sorry for the inconvenience.