diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 1be5cadaf..924fbdb41 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -43,6 +43,11 @@ Breaking Changes:
 
 Other Changes:
 
+- Tables: fixed a bug where nesting BeginTable()->Begin()->BeginTable() would
+  result in temporarily incorrect state, which would lead to bugs to side effects
+  in various locations, e.g. GetContentRegionAvail() calls or using clipper. (#9005)
+  EndTable() was mistakenly restoring a wrong current table.
+
 
 -----------------------------------------------------------------------
  VERSION 1.92.4 (Released 2025-10-14)
diff --git a/imgui_internal.h b/imgui_internal.h
index 0fa0ba8f2..701652e4b 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -3045,6 +3045,7 @@ struct IMGUI_API ImGuiTable
 // sizeof() ~ 136 bytes.
 struct IMGUI_API ImGuiTableTempData
 {
+    ImGuiID                     WindowID;                   // Shortcut to g.Tables[TableIndex]->OuterWindow->ID.
     int                         TableIndex;                 // Index in g.Tables.Buf[] pool
     float                       LastTimeActive;             // Last timestamp this structure was used
     float                       AngledHeadersExtraWidth;    // Used in EndTable()
diff --git a/imgui_tables.cpp b/imgui_tables.cpp
index 7e7395352..d79cfe435 100644
--- a/imgui_tables.cpp
+++ b/imgui_tables.cpp
@@ -464,6 +464,7 @@ bool    ImGui::BeginTableEx(const char* name, ImGuiID id, int columns_count, ImG
     table->HostIndentX = inner_window->DC.Indent.x;
     table->HostClipRect = inner_window->ClipRect;
     table->HostSkipItems = inner_window->SkipItems;
+    temp_data->WindowID = inner_window->ID;
     temp_data->HostBackupWorkRect = inner_window->WorkRect;
     temp_data->HostBackupParentWorkRect = inner_window->ParentWorkRect;
     temp_data->HostBackupColumnsOffset = outer_window->DC.ColumnsOffset;
@@ -1366,7 +1367,7 @@ void    ImGui::EndTable()
     ImGuiWindow* inner_window = table->InnerWindow;
     ImGuiWindow* outer_window = table->OuterWindow;
     ImGuiTableTempData* temp_data = table->TempData;
-    IM_ASSERT(inner_window == g.CurrentWindow);
+    IM_ASSERT(inner_window == g.CurrentWindow && inner_window->ID == temp_data->WindowID);
     IM_ASSERT(outer_window == inner_window || outer_window == inner_window->ParentWindow);
 
     if (table->IsInsideRow)
@@ -1559,7 +1560,7 @@ void    ImGui::EndTable()
     IM_ASSERT(g.CurrentWindow == outer_window && g.CurrentTable == table);
     IM_ASSERT(g.TablesTempDataStacked > 0);
     temp_data = (--g.TablesTempDataStacked > 0) ? &g.TablesTempData[g.TablesTempDataStacked - 1] : NULL;
-    g.CurrentTable = temp_data ? g.Tables.GetByIndex(temp_data->TableIndex) : NULL;
+    g.CurrentTable = temp_data && (temp_data->WindowID == outer_window->ID) ? g.Tables.GetByIndex(temp_data->TableIndex) : NULL;
     if (g.CurrentTable)
     {
         g.CurrentTable->TempData = temp_data;