fix graph and white background added

python_app/gui/controllers/bscan_replay.py

@@ -116,14 +116,14 @@ class BscanReplay:
         finally:
             self.active = False
 
-        # Tap and results rings drop independently: only these replayed keys belong
-        # in the refreshed image; unrelated runtime results may still use old settings.
+        # Tap and results rings drop independently: only these replayed keys belong in the
+        # refreshed image. One image never mixes settings, so unreturned sweeps are left out.
         self.history.replay_results[:] = [replayed[key] for key in keys if key in replayed]
         received = sum(key in replayed for key in keys[:sent])
         if received < sent:
             self._warning(
                 f"B-scan replay recovered {received} of {sent} re-sent sweeps; "
-                "some columns may still show their captured settings.",
+                "the image leaves the others out.",
                 once_key=f"bscan_replay_incomplete_{sent}_{received}",
             )
         self._debug(f"B-scan replay finished: sent={sent}, recovered={received}.")