The + is gone from the damage tooltips

It's not a modifier, it's a set value.

What i ment was.previous to the snapshot,a + was before the attack damage,but now,no more. Just look at the screenshot again,and you will see.

that was default damage (1) + new damage, now it's instantly calculated and says total damage = attack damage, not default damage (1) + new damage that's why there is no + sign

Also,this is not resolved. This is a bug they put in a snapshot.

No, this changed in the snapshot, this is intended