Ticket #2233: delete-annotation-sets.patch

src/main/java/org/sophie2/main/app/commons/book/BookExtrasState.java

@@ -92 +92 @@
         public BookExtrasState remove(ResourceRefR4 ref) {
                 assert this.knownExtras.contains(ref) : "The specified extra does not exist!";
                 
-                ResourceRefR4 current = ref.equals(this.currentExtra) ? null : ref;
+                ResourceRefR4 current = ref.equals(this.currentExtra) ? null : this.currentExtra;
                 ImmSet<ResourceRefR4> newShownExtras = 
                         this.shownExtras.contains(ref) ? this.shownExtras.remove(ref) : this.shownExtras;
                 return new BookExtrasState(current, this.knownExtras.remove(ref), newShownExtras);