.

wcfs/internal/xbtree/δbtail.go

@@ -617,10 +617,6 @@ func (δBtail *ΔBtail) Update(δZ *zodb.EventCommit) (_ ΔB, err error) {
 			if err != nil {
 				return ΔB{}, err
 			}
-			// XXX kill vvv check?
-			if !δTtail.trackNew.Empty() {
-				panicf("BUG: ΔBtail.Update: ΔTtail<%s>.trackNew != ø after _Update1", root)
-			}
 
 			// NOTE we cannot skip computing diff for HEAD~..HEAD
 			// even after _Update1 because _Update1 was working with different trackNew.