Backoffice: CTRL+Click to open in a new tab should work on Linux (closes #21009) (#21027)

* fix: uses 'href' as property instead of attribute

* build: runs on PR to release branches

* Content references: Avoid requesting references for content that is not yet persisted server side (#21035)

* Avoid requesting references for content that is not yet persisted server side.

* Apply suggestions from code review

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* refactor to use condition

* revert

* danish translations

* da translation

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Niels Lyngsø <niels.lyngso@gmail.com>

* fix: CTRL+Click now opens links in new tab on Linux

The router's anchor click handler incorrectly assumed non-Windows
platforms use Meta (⌘) key for "open in new tab". This broke
CTRL+Click on Linux, which uses CTRL like Windows.

Changed detection from "is Windows" to "is Mac" so Linux correctly
uses CTRL+Click while Mac continues to use Meta+Click.

Also replaced deprecated navigator.platform with navigator.userAgent.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

---------

Co-authored-by: Andy Butland <abutland73@gmail.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Niels Lyngsø <niels.lyngso@gmail.com>
Co-authored-by: Claude <noreply@anthropic.com>

.github/workflows/azure-backoffice.yml

@@ -4,6 +4,7 @@ on:
   push:
     branches:
       - main
+      - release/*
       - v*/dev
       - v*/main
     paths:
@@ -15,6 +16,7 @@ on:
     types: [opened, synchronize, reopened, closed]
     branches:
       - main
+      - release/*
       - v*/dev
       - v*/main
   workflow_dispatch:

src/Umbraco.Web.UI.Client/src/apps/backoffice/components/backoffice-header-sections.element.ts

@@ -1,6 +1,5 @@
 import { UMB_BACKOFFICE_CONTEXT } from '../backoffice.context.js';
 import type { UmbBackofficeContext } from '../backoffice.context.js';
-import type { CSSResultGroup } from '@umbraco-cms/backoffice/external/lit';
 import { css, customElement, html, ifDefined, repeat, state } from '@umbraco-cms/backoffice/external/lit';
 import { UmbLitElement } from '@umbraco-cms/backoffice/lit-element';
 import type { ManifestSection } from '@umbraco-cms/backoffice/section';
@@ -113,15 +112,13 @@ export class UmbBackofficeHeaderSectionsElement extends UmbLitElement {
 		const label = this.localize.string(manifest?.meta.label || manifest?.name);
 		return html`<uui-tab
 			data-mark="section-link:${manifest.alias}"
-			href=${this.#getSectionPath(manifest)}
+			.href=${this.#getSectionPath(manifest)}
 			label=${ifDefined(label)}
 			?active=${this._currentSectionAlias === manifest.alias}
-			@click=${(event: PointerEvent) => this.#onSectionClick(event, manifest)}
-			>${label}</uui-tab
-		>`;
+			@click=${(event: PointerEvent) => this.#onSectionClick(event, manifest)}></uui-tab>`;
 	}
 
-	static override styles: CSSResultGroup = [
+	static override readonly styles = [
 		css`
 			:host {
 				display: contents;

src/Umbraco.Web.UI.Client/src/packages/core/router/router-slot/util/anchor.ts

@@ -3,11 +3,13 @@
  * that has a relative HREF, uses the history API instead.
  */
 export function ensureAnchorHistory() {
-	const isWindows = navigator.platform.toUpperCase().indexOf('WIN') !== -1;
+	const isMac = /Mac|iPhone|iPad|iPod/.test(navigator.userAgent);
 
 	window.addEventListener('click', (e: MouseEvent) => {
-		// If we try to open link in a new tab, then we want to skip skip:
-		if ((isWindows && e.ctrlKey) || (!isWindows && e.metaKey)) return;
+		// If we try to open link in a new tab, we want to skip:
+		// - Mac uses Meta (⌘) + Click
+		// - Windows and Linux use Ctrl + Click
+		if ((isMac && e.metaKey) || (!isMac && e.ctrlKey)) return;
 
 		// Find the target by using the composed path to get the element through the shadow boundaries.
 		// Support both HTML anchor tags and SVG anchor tags