Diablo II Resurrected update version 1.05 was released today by Blizzard. You can find out the complete patch notes for this update from here.
This update appears to fix the issue with characters getting accidentally deleted by the players. Other fixes include stability and crash fixes. You can find out the details on this update below, or have a look at them on the official website.
Diablo II Resurrected Update 1.05 Patch Notes
GENERAL
- Improvements to character deletion to help users from accidentally deleting their characters.
STABILITY AND PERFORMANCE
- Various crash/stability fixes