Hi !
Woke up this morning to the same issue.
This post suspects Signal’s synchronization might be the cause and I indeed used signal yestersay both on my cellphone and computer.
My setting :
/e/OS v. 1.19.1 on a Android 12
Samsung Galaxy S10e
The author of the previous post mentioned deactivating Signal’s contacts sync in e/OS/ settings so that’s why I did, hoping it will prevent future bugs.