--- title: Did you see background tasks break in production when... description: Background tasks that update SwiftUI observable objects off the main actor can cause subtle view tree corruption, manifesting as flickering lists with no... canonical: https://daily.dev/posts/did-you-see-background-tasks-break-in-production-when-they-touched-swiftui-state-directly--o6qktkzig twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Did you see background tasks break in production when they touched SwiftUI state directly? | daily.dev og:description: Background tasks that update SwiftUI observable objects off the main actor can cause subtle view tree corruption, manifesting as flickering lists with no... og:url: https://daily.dev/posts/did-you-see-background-tasks-break-in-production-when-they-touched-swiftui-state-directly--o6qktkzig og:image: https://api.daily.dev/og/posts/O6QktKZiG.png og:image:alt: Did you see background tasks break in production when they touched SwiftUI state directly? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Did you see background tasks break in production when they touched SwiftUI state directly? **[Rebeloper](https://daily.dev/sources/rebeloper)** · 1 min read · 0 upvotes · 0 comments ## Summary Background tasks that update SwiftUI observable objects off the main actor can cause subtle view tree corruption, manifesting as flickering lists with no obvious log output. The fix is enforcing strict main actor boundaries: background tasks prepare data only, while all UI state mutations happen on the main actor. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#swiftui](https://daily.dev/tags/swiftui) [View this post on daily.dev](https://daily.dev/posts/did-you-see-background-tasks-break-in-production-when-they-touched-swiftui-state-directly--o6qktkzig) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Did you see background tasks break in production when they touched SwiftUI state directly?","url":"https://daily.dev/posts/did-you-see-background-tasks-break-in-production-when-they-touched-swiftui-state-directly--o6qktkzig","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/did-you-see-background-tasks-break-in-production-when-they-touched-swiftui-state-directly--o6qktkzig"},"datePublished":"2026-03-14T07:51:00.801Z","dateModified":"2026-03-14T07:51:15.168Z","description":"Background tasks that update SwiftUI observable objects off the main actor can cause subtle view tree corruption, manifesting as flickering lists with no...","image":"https://i.ytimg.com/vi/NJ6nc8fNj_M/sddefault.jpg","thumbnailUrl":"https://i.ytimg.com/vi/NJ6nc8fNj_M/sddefault.jpg","isAccessibleForFree":true,"articleSection":"Rebeloper","inLanguage":"en","publisher":{"@type":"Organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180}},"author":{"@type":"Organization","name":"Rebeloper","logo":"https://media.daily.dev/image/upload/s--W0sZL8K4--/f_auto/v1726990075/logos/rebeloper","url":"https://daily.dev/sources/rebeloper"},"commentCount":0,"discussionUrl":"https://daily.dev/posts/did-you-see-background-tasks-break-in-production-when-they-touched-swiftui-state-directly--o6qktkzig","interactionStatistic":[{"@type":"InteractionCounter","interactionType":{"@type":"LikeAction"},"userInteractionCount":0},{"@type":"InteractionCounter","interactionType":{"@type":"CommentAction"},"userInteractionCount":0}],"keywords":"swiftui","timeRequired":"PT1M","video":{"@type":"VideoObject","name":"Did you see background tasks break in production when they touched SwiftUI state directly?","description":"Background tasks that update SwiftUI observable objects off the main actor can cause subtle view tree corruption, manifesting as flickering lists with no...","thumbnailUrl":"https://i.ytimg.com/vi/NJ6nc8fNj_M/sddefault.jpg","uploadDate":"2026-03-14T07:51:00.801Z","duration":"PT1M","url":"https://api.daily.dev/r/O6QktKZiG","embedUrl":"https://www.youtube.com/embed/NJ6nc8fNj_M"}} {"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://daily.dev"},{"@type":"ListItem","position":2,"name":"Rebeloper","item":"https://daily.dev/sources/rebeloper"},{"@type":"ListItem","position":3,"name":"Did you see background tasks break in production when they touched SwiftUI state directly?"}]} ```