Fix bug with progress message

jdaviz/utils.py

@@ -48,11 +48,11 @@ def __init__(self):
         self.first = True
 
     def put(self, state, msg):
-
         if len(self.queue) == 0:
             self._write_message(state, msg)
 
-        self.queue.appendleft(msg)
+        if not msg.loading:
+            self.queue.appendleft(msg)
 
     def close_current_message(self, state):
 
@@ -77,6 +77,9 @@ def _write_message(self, state, msg):
         state.snackbar['loading'] = msg.loading
         state.snackbar['show'] = True
 
+        if msg.loading:
+            return
+
         # timeout of the first message needs to be increased by a
         # few seconds to account for the time spent in page rendering.
         # A more elegant way to address this should be via a callback