diff --git a/source/blender/editors/uvedit/uvedit_select.cc b/source/blender/editors/uvedit/uvedit_select.cc
index 330578c7959..8bf8afbf0b0 100644
--- a/source/blender/editors/uvedit/uvedit_select.cc
+++ b/source/blender/editors/uvedit/uvedit_select.cc
@@ -4898,6 +4898,12 @@ static wmOperatorStatus uv_select_similar_vert_exec(bContext *C, wmOperator *op)
       }
     }
     if (changed) {
+      if (ts->uv_flag & UV_SYNC_SELECTION) {
+        BM_mesh_select_flush(bm);
+      }
+      else {
+        uvedit_select_flush(scene, bm);
+      }
       uv_select_tag_update_for_object(depsgraph, ts, ob);
     }
   }
@@ -5006,6 +5012,12 @@ static wmOperatorStatus uv_select_similar_edge_exec(bContext *C, wmOperator *op)
       }
     }
     if (changed) {
+      if (ts->uv_flag & UV_SYNC_SELECTION) {
+        BM_mesh_select_flush(bm);
+      }
+      else {
+        uvedit_select_flush(scene, bm);
+      }
       uv_select_tag_update_for_object(depsgraph, ts, ob);
     }
   }
@@ -5097,6 +5109,12 @@ static wmOperatorStatus uv_select_similar_face_exec(bContext *C, wmOperator *op)
       }
     }
     if (changed) {
+      if (ts->uv_flag & UV_SYNC_SELECTION) {
+        BM_mesh_select_flush(bm);
+      }
+      else {
+        uvedit_select_flush(scene, bm);
+      }
       uv_select_tag_update_for_object(depsgraph, ts, ob);
     }
   }
@@ -5208,6 +5226,12 @@ static wmOperatorStatus uv_select_similar_island_exec(bContext *C, wmOperator *o
     }
 
     if (changed) {
+      if (ts->uv_flag & UV_SYNC_SELECTION) {
+        BM_mesh_select_flush(bm);
+      }
+      else {
+        uvedit_select_flush(scene, bm);
+      }
       uv_select_tag_update_for_object(depsgraph, ts, obedit);
     }
   }