alternative fix

Author: Rich-Harris

packages/svelte/src/internal/client/dom/blocks/each.js

@@ -503,8 +503,6 @@ function reconcile(state, array, anchor, flags, get_key) {
 		current = item.next;
 	}
 
-	let has_offscreen_items = items.size > length;
-
 	if (current !== null || seen !== undefined) {
 		var to_destroy = seen === undefined ? [] : array_from(seen);
 
@@ -518,8 +516,6 @@ function reconcile(state, array, anchor, flags, get_key) {
 
 		var destroy_length = to_destroy.length;
 
-		has_offscreen_items = items.size - destroy_length > length;
-
 		if (destroy_length > 0) {
 			var controlled_anchor = (flags & EACH_IS_CONTROLLED) !== 0 && length === 0 ? anchor : null;
 
@@ -537,18 +533,6 @@ function reconcile(state, array, anchor, flags, get_key) {
 		}
 	}
 
-	// Append offscreen items at the end
-	if (has_offscreen_items) {
-		for (const item of items.values()) {
-			if (!item.o) {
-				link(state, prev, item);
-				prev = item;
-			}
-		}
-	}
-
-	state.effect.last = prev && prev.e;
-
 	if (is_animated) {
 		queue_micro_task(() => {
 			if (to_animate === undefined) return;
@@ -653,6 +637,10 @@ function link(state, prev, next) {
 		state.first = next;
 		state.effect.first = next && next.e;
 	} else {
+		if (prev.e === state.effect.last && next !== null) {
+			state.effect.last = next.e;
+		}
+
 		if (prev.e.next) {
 			prev.e.next.prev = null;
 		}
@@ -664,6 +652,10 @@ function link(state, prev, next) {
 	if (next === null) {
 		state.effect.last = prev && prev.e;
 	} else {
+		if (next.e === state.effect.last && prev === null) {
+			state.effect.last = next.e.prev;
+		}
+
 		if (next.e.prev) {
 			next.e.prev.next = null;
 		}