Bumped version to 20250527.0

demo/src/stubs/frontend.ts

@@ -1,7 +1,30 @@
 import type { MockHomeAssistant } from "../../../src/fake_data/provide_hass";
 
+let changeFunction;
+
 export const mockFrontend = (hass: MockHomeAssistant) => {
   hass.mockWS("frontend/get_user_data", () => ({
     value: null,
   }));
+  hass.mockWS("frontend/set_user_data", ({ key, value }) => {
+    if (key === "sidebar") {
+      changeFunction?.({
+        value: {
+          panelOrder: value.panelOrder || [],
+          hiddenPanels: value.hiddenPanels || [],
+        },
+      });
+    }
+  });
+  hass.mockWS("frontend/subscribe_user_data", (_msg, _hass, onChange) => {
+    changeFunction = onChange;
+    onChange?.({
+      value: {
+        panelOrder: [],
+        hiddenPanels: [],
+      },
+    });
+    // eslint-disable-next-line @typescript-eslint/no-empty-function
+    return () => {};
+  });
 };

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name         = "home-assistant-frontend"
-version      = "20250430.0"
+version      = "20250527.0"
 license      = "Apache-2.0"
 license-files = ["LICENSE*"]
 description  = "The Home Assistant frontend"

src/components/chart/ha-chart-base.ts

@@ -220,11 +220,11 @@ export class HaChartBase extends LitElement {
       return nothing;
     }
     const datasets = ensureArray(this.data);
-    const items = (legend.data ||
+    const items: LegendComponentOption["data"] =
-      datasets
+      legend.data ||
+      ((datasets
         .filter((d) => (d.data as any[])?.length && (d.id || d.name))
-        .map((d) => d.name ?? d.id) ||
+        .map((d) => d.name ?? d.id) || []) as string[]);
-      []) as string[];
 
     const isMobile = window.matchMedia(
       "all and (max-width: 450px), all and (max-height: 500px)"
@@ -239,20 +239,32 @@ export class HaChartBase extends LitElement {
       })}
     >
       <ul>
-        ${items.map((item: string, index: number) => {
+        ${items.map((item, index) => {
           if (!this.expandLegend && index >= overflowLimit) {
             return nothing;
           }
+          let itemStyle: Record<string, any> = {};
+          let name = "";
+          if (typeof item === "string") {
+            name = item;
             const dataset = datasets.find(
               (d) => d.id === item || d.name === item
             );
-          const color = dataset?.color as string;
+            itemStyle = {
-          const borderColor = dataset?.itemStyle?.borderColor as string;
+              color: dataset?.color as string,
+              ...(dataset?.itemStyle as { borderColor?: string }),
+            };
+          } else {
+            name = item.name ?? "";
+            itemStyle = item.itemStyle ?? {};
+          }
+          const color = itemStyle?.color as string;
+          const borderColor = itemStyle?.borderColor as string;
           return html`<li
-            .name=${item}
+            .name=${name}
             @click=${this._legendClick}
-            class=${classMap({ hidden: this._hiddenDatasets.has(item) })}
+            class=${classMap({ hidden: this._hiddenDatasets.has(name) })}
-            .title=${item}
+            .title=${name}
           >
             <div
               class="bullet"
@@ -261,7 +273,7 @@ export class HaChartBase extends LitElement {
                 borderColor: borderColor || color,
               })}
             ></div>
-            <div class="label">${item}</div>
+            <div class="label">${name}</div>
           </li>`;
         })}
         ${items.length > overflowLimit

src/components/chart/state-history-chart-line.ts

@@ -82,6 +82,8 @@ export class StateHistoryChartLine extends LitElement {
 
   private _chartTime: Date = new Date();
 
+  private _previousYAxisLabelValue = 0;
+
   protected render() {
     return html`
       <ha-chart-base
@@ -258,32 +260,7 @@ export class StateHistoryChartLine extends LitElement {
           },
           axisLabel: {
             margin: 5,
-            formatter: (value: number) => {
+            formatter: this._formatYAxisLabel,
-              const formatOptions =
-                value >= 1 || value <= -1
-                  ? undefined
-                  : {
-                      // show the first significant digit for tiny values
-                      maximumFractionDigits: Math.max(
-                        2,
-                        -Math.floor(Math.log10(Math.abs(value % 1 || 1)))
-                      ),
-                    };
-              const label = formatNumber(
-                value,
-                this.hass.locale,
-                formatOptions
-              );
-              const width = measureTextWidth(label, 12) + 5;
-              if (width > this._yWidth) {
-                this._yWidth = width;
-                fireEvent(this, "y-width-changed", {
-                  value: this._yWidth,
-                  chartIndex: this.chartIndex,
-                });
-              }
-              return label;
-            },
           },
         } as YAXisOption,
         legend: {
@@ -745,6 +722,33 @@ export class StateHistoryChartLine extends LitElement {
     this._visualMap = visualMap.length > 0 ? visualMap : undefined;
   }
 
+  private _formatYAxisLabel = (value: number) => {
+    const formatOptions =
+      value >= 1 || value <= -1
+        ? undefined
+        : {
+            // show the first significant digit for tiny values
+            maximumFractionDigits: Math.max(
+              2,
+              // use the difference to the previous value to determine the number of significant digits #25526
+              -Math.floor(
+                Math.log10(Math.abs(value - this._previousYAxisLabelValue || 1))
+              )
+            ),
+          };
+    const label = formatNumber(value, this.hass.locale, formatOptions);
+    const width = measureTextWidth(label, 12) + 5;
+    if (width > this._yWidth) {
+      this._yWidth = width;
+      fireEvent(this, "y-width-changed", {
+        value: this._yWidth,
+        chartIndex: this.chartIndex,
+      });
+    }
+    this._previousYAxisLabelValue = value;
+    return label;
+  };
+
   private _clampYAxis(value?: number | ((values: any) => number)) {
     if (this.logarithmicScale) {
       // log(0) is -Infinity, so we need to set a minimum value

src/components/ha-items-display-editor.ts

@@ -262,7 +262,7 @@ export class HaItemDisplayEditor extends LitElement {
         ];
       }
 
-      return items.sort((a, b) =>
+      return visibleItems.sort((a, b) =>
         a.disableSorting && !b.disableSorting ? -1 : compare(a.value, b.value)
       );
     }

src/components/ha-sidebar.ts

@@ -368,7 +368,7 @@ class HaSidebar extends SubscribeMixin(LitElement) {
     if (!this._panelOrder || !this._hiddenPanels) {
       return html`
         <ha-fade-in .delay=${500}
-          ><ha-spinner size="large"></ha-spinner
+          ><ha-spinner size="small"></ha-spinner
         ></ha-fade-in>
       `;
     }

src/data/history.ts

@@ -640,6 +640,12 @@ export const mergeHistoryResults = (
   }
 
   for (const item of ltsResult.line) {
+    if (item.unit === BLANK_UNIT) {
+      // disabled entities have no unit, so we need to find the unit from the history result
+      item.unit =
+        historyResult.line.find((line) => line.identifier === item.identifier)
+          ?.unit ?? BLANK_UNIT;
+    }
     const key = computeGroupKey(
       item.unit,
       item.device_class,

src/panels/lovelace/cards/energy/hui-energy-devices-detail-graph-card.ts

@@ -6,6 +6,7 @@ import { customElement, property, state } from "lit/decorators";
 import { classMap } from "lit/directives/class-map";
 import memoizeOne from "memoize-one";
 import type { BarSeriesOption } from "echarts/charts";
+import type { LegendComponentOption } from "echarts/components";
 import { getGraphColorByIndex } from "../../../../common/color/colors";
 import { getEnergyColor } from "./common/color";
 import "../../../../components/ha-card";
@@ -54,6 +55,8 @@ export class HuiEnergyDevicesDetailGraphCard
 
   @state() private _data?: EnergyData;
 
+  @state() private _legendData?: LegendComponentOption["data"];
+
   @state() private _start = startOfToday();
 
   @state() private _end = endOfToday();
@@ -185,6 +188,7 @@ export class HuiEnergyDevicesDetailGraphCard
         legend: {
           show: true,
           type: "custom",
+          data: this._legendData,
           selected: this._hiddenStats.reduce((acc, stat) => {
             acc[stat] = false;
             return acc;
@@ -310,6 +314,13 @@ export class HuiEnergyDevicesDetailGraphCard
     );
 
     datasets.push(...processedData);
+    this._legendData = processedData.map((d) => ({
+      name: d.name as string,
+      itemStyle: {
+        color: d.color as string,
+        borderColor: d.itemStyle?.borderColor as string,
+      },
+    }));
 
     if (showUntracked) {
       const untrackedData = this._processUntracked(
@@ -319,6 +330,13 @@ export class HuiEnergyDevicesDetailGraphCard
         false
       );
       datasets.push(untrackedData);
+      this._legendData.push({
+        name: untrackedData.name as string,
+        itemStyle: {
+          color: untrackedData.color as string,
+          borderColor: untrackedData.itemStyle?.borderColor as string,
+        },
+      });
     }
 
     fillDataGapsAndRoundCaps(datasets);

src/panels/lovelace/cards/hui-button-card.ts

@@ -224,19 +224,19 @@ export class HuiButtonCard extends LitElement implements LovelaceCard {
                   filter: colored ? stateColorBrightness(stateObj) : undefined,
                   height: this._config.icon_height
                     ? this._config.icon_height
-                    : "",
+                    : undefined,
                 })}
               ></ha-state-icon>
             `
-          : ""}
+          : nothing}
         ${this._config.show_name
           ? html`<span tabindex="-1" .title=${name}>${name}</span>`
-          : ""}
+          : nothing}
         ${this._config.show_state && stateObj
           ? html`<span class="state">
               ${this.hass.formatEntityState(stateObj)}
             </span>`
-          : ""}
+          : nothing}
       </ha-card>
     `;
   }
@@ -282,7 +282,8 @@ export class HuiButtonCard extends LitElement implements LovelaceCard {
           align-items: center;
           text-align: center;
           padding: 4% 0;
-          font-size: 16.8px;
+          font-size: var(--ha-font-size-l);
+          line-height: var(--ha-line-height-condensed);
           height: 100%;
           box-sizing: border-box;
           justify-content: center;

src/translations/en.json

@@ -5131,7 +5131,7 @@
             "restore_entity_id_selected": {
               "button": "Recreate entity IDs of selected",
               "confirm_title": "Recreate entity IDs?",
-              "confirm_text": "Are you sure you want to change the entity IDs of these entities? You will have to change you dashboards, automations and scripts to use the new entity IDs.",
+              "confirm_text": "Are you sure you want to change the entity IDs of these entities? You will have to change your dashboards, automations and scripts to use the new entity IDs.",
               "changes": "The following entity IDs will be updated:"
             },
             "delete_selected": {