diff --git a/crates/ui-egui/src/canvas.rs b/crates/ui-egui/src/canvas.rs
index 5f8ae5d3..604c6e7e 100644
--- a/crates/ui-egui/src/canvas.rs
+++ b/crates/ui-egui/src/canvas.rs
@@ -1174,6 +1174,8 @@ pub fn document_area(app: &mut PdfCraftApp, index: usize, ui: &mut egui::Ui) {
         },
         ..Default::default()
     });
+    // Each document keeps its own scroll position when switching tabs (#189).
+    scroll = scroll.id_salt(("page-view", view.id));
     if let Some((page, fx, fy, rel)) = view.zoom_anchor.take() {
         let r = rects[page.min(rects.len() - 1)];
         let point = pos2(r.left() + fx * r.width(), r.top() - y_shift + fy * r.height());
diff --git a/crates/ui-egui/tests/viewer.rs b/crates/ui-egui/tests/viewer.rs
index 3f915bdf..13a8f123 100644
--- a/crates/ui-egui/tests/viewer.rs
+++ b/crates/ui-egui/tests/viewer.rs
@@ -1,5 +1,5 @@
 //! Viewer conveniences: close all, revert, fit height, view history, select all, find options,
-//! cover page.
+//! cover page, a scroll position per tab.
 
 use egui_kittest::Harness;
 use egui_kittest::kittest::Queryable;
@@ -395,3 +395,31 @@ fn optimizer_audits_space_usage() {
     h.run_steps(2);
     assert_eq!(h.state().dialog, Some(Dialog::Optimize), "back to the optimizer");
 }
+
+#[test]
+fn each_document_keeps_its_own_scroll_position() {
+    // #189: every document's page view shared one scroll position, so switching tabs showed a
+    // document at wherever the other one had been scrolled to (usually back at the top).
+    use pdfcraft_ui_egui::canvas::Fit;
+    let mut h = harness();
+    for v in &mut h.state_mut().views {
+        v.fit = Fit::Width;
+    }
+    let show = |h: &mut Harness<'static, PdfCraftApp>, i: usize| {
+        h.state_mut().active = Some(i);
+        h.run_steps(4);
+        h.state().views[i].current
+    };
+    show(&mut h, 0);
+    h.state_mut().views[0].goto = Some((3, 0.0));
+    h.run_steps(4);
+    assert_eq!(h.state().views[0].current, 3, "a.pdf scrolled to page 4");
+    // b.pdf opens where it was (the top), and is scrolled to its own last page.
+    assert_eq!(show(&mut h, 1), 0);
+    h.state_mut().views[1].goto = Some((1, 0.0));
+    h.run_steps(4);
+    assert_eq!(h.state().views[1].current, 1);
+    // Back to a.pdf: still on page 4, and b.pdf still on page 2.
+    assert_eq!(show(&mut h, 0), 3);
+    assert_eq!(show(&mut h, 1), 1);
+}
diff --git a/parity/acrobat-features.toml b/parity/acrobat-features.toml
index d26e3865..0ea77eba 100644
--- a/parity/acrobat-features.toml
+++ b/parity/acrobat-features.toml
@@ -1166,8 +1166,8 @@ milestone = "M3"
 status = "shipped"
 commands = []
 tools = ["doc_list"]
-evidence = ["crates/ui-egui/tests/editing.rs::combining_files_opens_a_new_unsaved_tab", "crates/ui-egui/tests/control.rs::state_and_view_options"]
-notes = ""
+evidence = ["crates/ui-egui/tests/editing.rs::combining_files_opens_a_new_unsaved_tab", "crates/ui-egui/tests/control.rs::state_and_view_options", "crates/ui-egui/tests/viewer.rs::each_document_keeps_its_own_scroll_position"]
+notes = "each tab keeps its own scroll position (#189)"
 
 [[feature]]
 id = "view.multiple-windows"