diff --git a/examples/server/server.cpp b/examples/server/server.cpp
index f65b4ad0..b51f8e4f 100644
--- a/examples/server/server.cpp
+++ b/examples/server/server.cpp
@@ -330,6 +330,18 @@ struct server_response_reader {
         return !cancelled && received_count < id_tasks.size();
     }
 
+    // cancel-cascade fix: true only if one of THIS reader's tasks is on a
+    // slot (the active decode). Used to gate llama_decode_stop() so a queued/
+    // deferred task's disconnect cannot abort another task's active decode via
+    // the process-global stop_internal_decode flag. Best-effort cross-thread
+    // read (slots are not resized at runtime; same race class as the global).
+    bool any_task_on_slot() const {
+        for (const auto & slot : ctx_server.slots) {
+            if (slot.is_processing() && id_tasks.count(slot.id_task)) return true;
+        }
+        return false;
+    }
+
     // return nullptr if should_stop() is true before receiving a result
     // note: if one error is received, it will stop further processing and return error result
     server_task_result_ptr next(const std::function<bool()>& should_stop) {
@@ -1127,7 +1139,7 @@ int main(int argc, char ** argv) {
                 // non-stream, wait for the results
                 auto all_results = rd->wait_for_all(is_connection_closed);
                 if (all_results.is_terminated) {
-                    llama_decode_stop(); // send a signal to stop decode process
+                    if (rd->any_task_on_slot()) llama_decode_stop(); // cancel-cascade fix: stop only if OUR task is the active decode
                     return; // connection is closed
                 }
                 else if (all_results.error) {
@@ -1150,7 +1162,7 @@ int main(int argc, char ** argv) {
                 // ref: https://github.com/ggml-org/llama.cpp/pull/16486#discussion_r2419657309
                 server_task_result_ptr first_result = rd->next(is_connection_closed);
                 if (first_result == nullptr) {
-                    llama_decode_stop(); // send a signal to stop decode process
+                    if (rd->any_task_on_slot()) llama_decode_stop(); // cancel-cascade fix: stop only if OUR task is the active decode
                     return; // connection is closed
                 }
                 else if (first_result->is_error()) {
@@ -1480,7 +1492,7 @@ int main(int argc, char ** argv) {
 
         // collect results
         if (all_results.is_terminated) {
-            llama_decode_stop();
+            if (rd.any_task_on_slot()) llama_decode_stop(); // cancel-cascade fix: stop only if OUR task is the active decode
             return; // connection is closed
         }
         else if (all_results.error) {