diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7194e6a1..f2a3232a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,6 +8,7 @@
 - _...Add new stuff here..._
 
 ### 🐞 Bug fixes
+- Preserve expanded layer groups when deleting layers, including the first layer of a group
 - The map's data listener now fires on tile loads again, so source and vector layer field autocompletion is populated
 - The `maputnik` desktop binary now opens the default browser automatically on startup (opt out with `--no-browser`)
 - _...Add new stuff here..._
diff --git a/e2e/fixtures/grouped-layers-style.json b/e2e/fixtures/grouped-layers-style.json
new file mode 100644
index 00000000..46bb088b
--- /dev/null
+++ b/e2e/fixtures/grouped-layers-style.json
@@ -0,0 +1,16 @@
+{
+  "version": 8,
+  "name": "Grouped layers",
+  "sources": {},
+  "layers": [
+    { "id": "background", "type": "background" },
+    { "id": "park-a", "type": "background" },
+    { "id": "park-b", "type": "background" },
+    { "id": "park-c", "type": "background" },
+    { "id": "road", "type": "background" },
+    { "id": "park-d", "type": "background" },
+    { "id": "park-e", "type": "background" },
+    { "id": "water-a", "type": "background" },
+    { "id": "water-b", "type": "background" }
+  ]
+}
diff --git a/e2e/layers-list.spec.ts b/e2e/layers-list.spec.ts
index 85cdd4a1..2cc4bccb 100644
--- a/e2e/layers-list.spec.ts
+++ b/e2e/layers-list.spec.ts
@@ -306,6 +306,75 @@ describe("layers list", () => {
   });
 
   describe("groups", () => {
+    for (const control of ["menu", "trash"] as const) {
+      describe(`after deletion using ${control}`, () => {
+        beforeEach(async () => {
+          await when.setStyle("grouped_layers");
+        });
+
+        test("keeps all groups expanded when an earlier layer is deleted", async () => {
+          await when.click("skip-target-layer-list");
+          await then(get.elementByTestId("layer-list-item:park-b")).shouldBeVisible();
+          await when.deleteLayer("background", control);
+          await then(get.elementByTestId("layer-list-item:background")).shouldNotExist();
+          await then(get.elementByTestId("layer-list-group:park-0")).shouldExist();
+          await expect(get.elementByTestId("layer-list-group:water-6").getByRole("button")).toHaveAttribute("aria-expanded", "true");
+          await then(get.elementByTestId("layer-list-item:park-b")).shouldBeVisible();
+          await then(get.elementByTestId("layer-list-item:park-e")).shouldBeVisible();
+          await then(get.elementByTestId("layer-list-item:water-b")).shouldBeVisible();
+        });
+
+        test("preserves separate states for groups with the same prefix", async () => {
+          await when.click("layer-list-group:park-1");
+          await when.deleteLayer("background", control);
+          await then(get.elementByTestId("layer-list-group:park-0")).shouldExist();
+          await when.click("layer-list-item:road");
+          await expect(get.elementByTestId("layer-list-group:park-0").getByRole("button")).toHaveAttribute("aria-expanded", "true");
+          await expect(get.elementByTestId("layer-list-group:park-4").getByRole("button")).toHaveAttribute("aria-expanded", "false");
+          await then(get.elementByTestId("layer-list-item:park-b")).shouldBeVisible();
+          await then(get.elementByTestId("layer-list-item:park-e")).shouldNotBeVisible();
+        });
+
+        test("keeps a group expanded when its first layer is deleted", async () => {
+          await when.click("layer-list-group:park-1");
+          await when.deleteLayer("park-a", control);
+          await then(get.elementByTestId("layer-list-item:park-a")).shouldNotExist();
+          await when.click("layer-list-item:road");
+          await expect(get.elementByTestId("layer-list-group:park-1").getByRole("button")).toHaveAttribute("aria-expanded", "true");
+          await then(get.elementByTestId("layer-list-item:park-c")).shouldBeVisible();
+        });
+
+        for (const expandedGroup of ["park-1", "park-5"]) {
+          test(`keeps a merged group expanded when ${expandedGroup} was expanded`, async () => {
+            await when.click("layer-list-group:" + expandedGroup);
+            await when.deleteLayer("road", control);
+            await then(get.elementByTestId("layer-list-item:road")).shouldNotExist();
+            await expect(get.elementByTestId("layer-list-group:park-1").getByRole("button")).toHaveAttribute("aria-expanded", "true");
+            await then(get.elementByTestId("layer-list-item:park-b")).shouldBeVisible();
+            await then(get.elementByTestId("layer-list-item:park-e")).shouldBeVisible();
+          });
+        }
+
+        test("keeps a merged group collapsed when both groups were collapsed", async () => {
+          await when.deleteLayer("road", control);
+          await then(get.elementByTestId("layer-list-item:road")).shouldNotExist();
+          await when.click("layer-list-item:background");
+          await expect(get.elementByTestId("layer-list-group:park-1").getByRole("button")).toHaveAttribute("aria-expanded", "false");
+          await then(get.elementByTestId("layer-list-item:park-b")).shouldNotBeVisible();
+          await then(get.elementByTestId("layer-list-item:park-e")).shouldNotBeVisible();
+        });
+
+        test("preserves later groups after deleting an entire group", async () => {
+          await when.click("skip-target-layer-list");
+          await when.deleteLayer("park-a", control);
+          await when.deleteLayer("park-b", control);
+          await when.deleteLayer("park-c", control);
+          await expect(get.elementByTestId("layer-list-group:water-4").getByRole("button")).toHaveAttribute("aria-expanded", "true");
+          await then(get.elementByTestId("layer-list-item:water-b")).shouldBeVisible();
+        });
+      });
+    }
+
     test("simple", async () => {
       await when.setStyle("geojson");
 
diff --git a/e2e/maputnik-driver.ts b/e2e/maputnik-driver.ts
index 9851a542..00733f00 100644
--- a/e2e/maputnik-driver.ts
+++ b/e2e/maputnik-driver.ts
@@ -39,6 +39,7 @@ export class MaputnikDriver {
         "example-style-with-zoom-7-and-center-0-51.json",
         "example-style-with-zoom-5-and-center-50-50.json",
         "access-token-style.json",
+        "grouped-layers-style.json",
       ];
       for (const fixture of styleFixtures) {
         await this.helper.given.interceptAndMockResponse({
@@ -63,6 +64,18 @@ export class MaputnikDriver {
 
     modal: this.modalDriver.when,
 
+    deleteLayer: async (id: string, control: "menu" | "trash" = "menu") => {
+      if (control === "trash") {
+        await this.helper.when.hover("layer-list-item:" + id);
+        await this.helper.when.click("layer-list-item:" + id + ":delete");
+        return;
+      }
+
+      await this.helper.when.click("layer-list-item:" + id);
+      await this.helper.when.click("skip-target-layer-editor");
+      await this.helper.when.click("menu-delete-layer");
+    },
+
     setStyle: async (
       styleProperties:
         | "geojson"
@@ -73,6 +86,7 @@ export class MaputnikDriver {
         | "font"
         | "zoom_7_center_0_51"
         | "access_tokens"
+        | "grouped_layers"
         | "",
       zoom?: number
     ) => {
@@ -85,6 +99,7 @@ export class MaputnikDriver {
         font: "example-style-with-fonts.json",
         zoom_7_center_0_51: "example-style-with-zoom-7-and-center-0-51.json",
         access_tokens: "access-token-style.json",
+        grouped_layers: "grouped-layers-style.json",
       };
 
       const url = new URL(baseUrl);
diff --git a/src/components/LayerList.tsx b/src/components/LayerList.tsx
index 26a4e561..9ca6a2a6 100644
--- a/src/components/LayerList.tsx
+++ b/src/components/LayerList.tsx
@@ -106,13 +106,13 @@ class LayerListContainerInternal extends React.Component<LayerListContainerInter
     });
   };
 
-  groupedLayers(): (LayerSpecification & {key: string})[][] {
+  groupedLayers(layers = this.props.layers): (LayerSpecification & {key: string})[][] {
     const groups = [];
     const layerIdCount = new Map();
 
-    for (let i = 0; i < this.props.layers.length; i++) {
-      const origLayer = this.props.layers[i];
-      const previousLayer = this.props.layers[i-1];
+    for (let i = 0; i < layers.length; i++) {
+      const origLayer = layers[i];
+      const previousLayer = layers[i-1];
       layerIdCount.set(origLayer.id,
         layerIdCount.has(origLayer.id) ? layerIdCount.get(origLayer.id) + 1 : 0
       );
@@ -192,7 +192,39 @@ class LayerListContainerInternal extends React.Component<LayerListContainerInter
     return propsChanged;
   }
 
+  /**
+   * Preserves group state through surviving layer IDs when group indices change.
+   * If deletion joins groups, the result stays expanded when either group was.
+   */
+  private preserveLayerGroupState(previousLayers: LayerSpecification[]) {
+    if (previousLayers === this.props.layers) return;
+
+    const collapsedByLayer = new Map<string, boolean>();
+    let idx = 0;
+    for (const layers of this.groupedLayers(previousLayers)) {
+      const collapsed = this.isCollapsed(layerPrefix(layers[0].id), idx);
+      for (const layer of layers) {
+        collapsedByLayer.set(layer.id, collapsed);
+      }
+      idx += layers.length;
+    }
+
+    const collapsedGroups: {[key: string]: boolean} = {};
+    idx = 0;
+    for (const layers of this.groupedLayers()) {
+      const lookupKey = [layerPrefix(layers[0].id), idx].join("-");
+      collapsedGroups[lookupKey] = layers.every(layer => collapsedByLayer.get(layer.id) !== false);
+      idx += layers.length;
+    }
+
+    if (!lodash.isEqual(collapsedGroups, this.state.collapsedGroups)) {
+      this.setState({ collapsedGroups });
+    }
+  }
+
   componentDidUpdate (prevProps: LayerListContainerProps) {
+    this.preserveLayerGroupState(prevProps.layers);
+
     if (prevProps.selectedLayerIndex !== this.props.selectedLayerIndex) {
       const selectedItemNode = this.selectedItemRef.current;
       if (selectedItemNode && selectedItemNode.node) {