JAL-4199 Restore deletable test when removing workers

[jalview.git] / src / jalview / workers / AlignCalcManager2.java

diff --git a/src/jalview/workers/AlignCalcManager2.java b/src/jalview/workers/AlignCalcManager2.java
index 582c84f..39111ae 100644 (file)
--- a/src/jalview/workers/AlignCalcManager2.java
+++ b/src/jalview/workers/AlignCalcManager2.java
@@ -302,7 +302,10 @@ public class AlignCalcManager2 implements AlignCalcManagerI2
   @Override
   public void removeWorker(AlignCalcWorkerI worker)
   {
-    registered.remove(worker);
+    if (worker.isDeletable())
+    {
+      registered.remove(worker);
+    }
   }
 
   @Override