diff --git a/src/modules/aix/client/debugger/AixDebuggerFrame.tsx b/src/modules/aix/client/debugger/AixDebuggerFrame.tsx
index 66fd54663..760965daf 100644
--- a/src/modules/aix/client/debugger/AixDebuggerFrame.tsx
+++ b/src/modules/aix/client/debugger/AixDebuggerFrame.tsx
@@ -1,4 +1,5 @@
 import * as React from 'react';
+import { useShallow } from 'zustand/react/shallow';
 
 import type { SxProps } from '@mui/joy/styles/types';
 import { Box, Card, Chip, Divider, Sheet, Typography } from '@mui/joy';
@@ -10,6 +11,7 @@ import TimelapseIcon from '@mui/icons-material/Timelapse';
 
 import type { AixClientDebugger } from './memstore-aix-client-debugger';
 import { AixDebuggerMeasurementsTable } from './AixDebuggerMeasurementsTable';
+import { useAixClientDebuggerStore } from './memstore-aix-client-debugger';
 
 
 const _styles = {
@@ -79,14 +81,17 @@ export function AixDebuggerFrame(props: {
   frame: AixClientDebugger.Frame;
 }) {
 
-  // state
-  const [showHeaders, setShowHeaders] = React.useState(true);
-  const [showBody, setShowBody] = React.useState(true);
-  const [showParticles, setShowParticles] = React.useState(false); // hide by default (heavy)
+  // state: section open/close is kept in the debugger store so it persists across frame switches
+  const { showHeaders, showBody, showParticles, toggleOpenState } = useAixClientDebuggerStore(useShallow(state => ({
+    showHeaders: !!state.openStates.headers,
+    showBody: !!state.openStates.body,
+    showParticles: !!state.openStates.particles,
+    toggleOpenState: state.toggleOpenState,
+  })));
 
-  const handleToggleShowHeaders = React.useCallback(() => setShowHeaders(on => !on), []);
-  const handleToggleShowBody = React.useCallback(() => setShowBody(on => !on), []);
-  const handleToggleShowParticles = React.useCallback(() => setShowParticles(on => !on), []);
+  const handleToggleShowHeaders = React.useCallback(() => toggleOpenState('headers'), [toggleOpenState]);
+  const handleToggleShowBody = React.useCallback(() => toggleOpenState('body'), [toggleOpenState]);
+  const handleToggleShowParticles = React.useCallback(() => toggleOpenState('particles'), [toggleOpenState]);
 
   const { frame } = props;
 
diff --git a/src/modules/aix/client/debugger/memstore-aix-client-debugger.ts b/src/modules/aix/client/debugger/memstore-aix-client-debugger.ts
index 020dcba5d..ef5d45d4f 100644
--- a/src/modules/aix/client/debugger/memstore-aix-client-debugger.ts
+++ b/src/modules/aix/client/debugger/memstore-aix-client-debugger.ts
@@ -89,10 +89,14 @@ function _createAixClientDebuggerFrame(transport: AixClientDebugger.Transport, f
 
 /// Store ///
 
+export type AixDebuggerOpenKey = 'headers' | 'body' | 'particles';
+
 interface AixClientDebuggerState {
   frames: AixClientDebugger.Frame[];
   activeFrameId: AixFrameId | null;
   maxFrames: number;
+  // per-section open state for the current frame view
+  openStates: Partial<Record<AixDebuggerOpenKey, true>>;
   // AIX force disable streaming for all requests (separate from per-model llmForceNoStream)
   aixNoStreaming: boolean;
   // AIX next payload override - JSON string injected into requests after validation
@@ -111,6 +115,7 @@ interface AixClientDebuggerActions {
   setActiveFrame: (activeFrameId: AixFrameId | null) => void;
   setMaxFrames: (count: number) => void;
   clearHistory: () => void;
+  toggleOpenState: (key: AixDebuggerOpenKey) => void;
 }
 
 type AixClientDebuggerStore = AixClientDebuggerState & AixClientDebuggerActions;
@@ -122,6 +127,7 @@ export const useAixClientDebuggerStore = create<AixClientDebuggerStore>((_set) =
   frames: [],
   activeFrameId: null,
   maxFrames: DEFAULT_FRAMES_COUNT,
+  openStates: { headers: true, body: true }, // headers + body open by default; particles closed (heavy)
   aixNoStreaming: false,
   requestBodyOverrideJson: '',
 
@@ -135,11 +141,16 @@ export const useAixClientDebuggerStore = create<AixClientDebuggerStore>((_set) =
     // stealing focus from the main conversation request
     const isBackgroundOperation = (BACKGROUND_CONTEXT_NAMES as readonly string[]).includes(initialContext.contextName);
 
-    _set((state) => ({
-      frames: [newFrame, ...state.frames].slice(0, state.maxFrames),
-      // Auto-select if: no active frame yet, OR this is not a background operation
-      activeFrameId: (!state.activeFrameId || !isBackgroundOperation) ? newFrame.id : state.activeFrameId,
-    }));
+    _set(({ activeFrameId, frames, maxFrames }) => {
+      // Sticky selection: only snap to the new frame if the user was following latest (nothing selected, or the current selection is the previous top frame).
+      const previousLatestId = frames[0]?.id ?? null;
+      const isFollowingLatest = activeFrameId === null || activeFrameId === previousLatestId;
+      const shouldAutoSelect = isFollowingLatest && !isBackgroundOperation;
+      return {
+        frames: [newFrame, ...(frames)].slice(0, maxFrames),
+        activeFrameId: shouldAutoSelect ? newFrame.id : activeFrameId,
+      };
+    });
 
     return newFrame.id;
   },
@@ -193,6 +204,13 @@ export const useAixClientDebuggerStore = create<AixClientDebuggerStore>((_set) =
     activeFrameId: null,
   }),
 
+  toggleOpenState: (key) => _set(state => {
+    const next = { ...state.openStates };
+    if (next[key]) delete next[key];
+    else next[key] = true;
+    return { openStates: next };
+  }),
+
 }));