diff --git a/modules/indexer/issues/bleve/bleve.go b/modules/indexer/issues/bleve/bleve.go
index 684808ca01..3627ec5079 100644
--- a/modules/indexer/issues/bleve/bleve.go
+++ b/modules/indexer/issues/bleve/bleve.go
@@ -268,14 +268,10 @@ func (b *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (
 		} else {
 			// "(none)" becomes 0, it means no assignee
 			assigneeIDInt64, _ := strconv.ParseInt(options.AssigneeID, 10, 64)
-			if options.AssigneeID == "(none)" {
-				queries = append(queries, inner_bleve.NumericEqualityQuery(assigneeIDInt64, "assignee_id"))
-			} else {
-				queries = append(queries, bleve.NewDisjunctionQuery(
-					inner_bleve.NumericEqualityQuery(assigneeIDInt64, "assignee_ids"),
-					inner_bleve.NumericEqualityQuery(assigneeIDInt64, "assignee_id"),
-				))
-			}
+			queries = append(queries, bleve.NewDisjunctionQuery(
+				inner_bleve.NumericEqualityQuery(assigneeIDInt64, "assignee_ids"),
+				inner_bleve.NumericEqualityQuery(assigneeIDInt64, "assignee_id"),
+			))
 		}
 	}
 
diff --git a/modules/indexer/issues/elasticsearch/elasticsearch.go b/modules/indexer/issues/elasticsearch/elasticsearch.go
index baef644cc1..a021d25305 100644
--- a/modules/indexer/issues/elasticsearch/elasticsearch.go
+++ b/modules/indexer/issues/elasticsearch/elasticsearch.go
@@ -16,7 +16,7 @@ import (
 	"gitea.dev/modules/util"
 )
 
-const issueIndexerLatestVersion = 3
+const issueIndexerLatestVersion = 4
 
 var _ internal.Indexer = &Indexer{}
 
@@ -58,6 +58,7 @@ const (
 			"no_project": { "type": "boolean", "index": true },
 			"poster_id": { "type": "integer", "index": true },
 			"assignee_id": { "type": "integer", "index": true },
+			"assignee_ids": { "type": "integer", "index": true },
 			"mention_ids": { "type": "integer", "index": true },
 			"reviewed_ids": { "type": "integer", "index": true },
 			"review_requested_ids": { "type": "integer", "index": true },
@@ -179,11 +180,22 @@ func (b *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (
 
 	if options.AssigneeID != "" {
 		if options.AssigneeID == "(any)" {
-			query.Must(es.NewRangeQuery("assignee_id").Gte(1))
+			query.Must(es.NewBoolQuery().Should(
+				es.NewRangeQuery("assignee_id").Gte(1),
+				es.NewRangeQuery("assignee_ids").Gte(1),
+			))
 		} else {
 			// "(none)" becomes 0, it means no assignee
 			assigneeIDInt64, _ := strconv.ParseInt(options.AssigneeID, 10, 64)
-			query.Must(es.TermQuery("assignee_id", assigneeIDInt64))
+			if options.AssigneeID == "(none)" {
+				query.Must(es.TermQuery("assignee_id", assigneeIDInt64)).
+					MustNot(es.NewRangeQuery("assignee_ids").Gte(1))
+			} else {
+				query.Must(es.NewBoolQuery().Should(
+					es.TermQuery("assignee_id", assigneeIDInt64),
+					es.TermQuery("assignee_ids", assigneeIDInt64),
+				))
+			}
 		}
 	}
 
diff --git a/modules/indexer/issues/meilisearch/meilisearch.go b/modules/indexer/issues/meilisearch/meilisearch.go
index ddde9c89f0..1c07549109 100644
--- a/modules/indexer/issues/meilisearch/meilisearch.go
+++ b/modules/indexer/issues/meilisearch/meilisearch.go
@@ -20,7 +20,7 @@ import (
 )
 
 const (
-	issueIndexerLatestVersion = 5
+	issueIndexerLatestVersion = 6
 
 	// TODO: make this configurable if necessary
 	maxTotalHits = 10000
@@ -75,6 +75,7 @@ func NewIndexer(url, apiKey, indexerName string) *Indexer {
 			"no_project",
 			"poster_id",
 			"assignee_id",
+			"assignee_ids",
 			"mention_ids",
 			"reviewed_ids",
 			"review_requested_ids",
@@ -197,11 +198,20 @@ func (b *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (
 
 	if options.AssigneeID != "" {
 		if options.AssigneeID == "(any)" {
-			query.And(inner_meilisearch.NewFilterGte("assignee_id", 1))
+			query.And((&inner_meilisearch.FilterOr{}).
+				Or(inner_meilisearch.NewFilterGte("assignee_id", 1)).
+				Or(inner_meilisearch.NewFilterGte("assignee_ids", 1)))
 		} else {
 			// "(none)" becomes 0, it means no assignee
 			assigneeIDInt64, _ := strconv.ParseInt(options.AssigneeID, 10, 64)
-			query.And(inner_meilisearch.NewFilterEq("assignee_id", assigneeIDInt64))
+			if options.AssigneeID == "(none)" {
+				query.And(inner_meilisearch.NewFilterEq("assignee_id", assigneeIDInt64)).
+					And(inner_meilisearch.NewFilterNot(inner_meilisearch.NewFilterGte("assignee_ids", 1)))
+			} else {
+				query.And((&inner_meilisearch.FilterOr{}).
+					Or(inner_meilisearch.NewFilterEq("assignee_id", assigneeIDInt64)).
+					Or(inner_meilisearch.NewFilterEq("assignee_ids", assigneeIDInt64)))
+			}
 		}
 	}