Summary This incident involved a Unity Android build crashing immediately after the splash screen on subsequent launches. The crash only resolved temporarily when the app cache was cleared, and on some devices it never recovered. The logcat trace pointed directly into Mono’s Boehm garbage collector (libmonobdwgc-2.0.so), indicating a memory corruption or invalid GC state triggered … Read more
Summary This postmortem analyzes a common API‑design failure: misusing the “Async” suffix when naming functions. The confusion stems from mixing up asynchronous execution, non‑blocking behavior, and coroutines that yield. When these concepts are blurred, developers ship APIs that mislead callers, cause misuse, and create long‑term maintenance pain. Root Cause The core issue is treating “Async” … Read more
Summary The Marker.js updateMarker logic triggers re-renders even when the new position has the same coordinates (LAT + LONG) as the previous position. Despite memoizing markers using useMemo, the entire set of markers still flickers during updates. Root Cause The default comparison logic in updateMarker checks for strict equality (prevPosition === newPosition), which fails when … Read more
Summary A shortcode‑based Gutenberg block that displays top‑level WooCommerce product categories appeared everywhere except on product category archive pages. WooCommerce’s template loading and conditional logic prevented the block from rendering, causing the category list to disappear exactly where the merchant needed it most. Root Cause WooCommerce category archive templates apply conditional suppression of top‑level category … Read more
Summary A Visual Basic application using WebView2 failed to read the current URL because the developer attempted to access webView.Source.ToString, which returned Nothing. The issue stemmed from misunderstanding how WebView2 exposes navigation state and when its properties become valid. Root Cause Source is not populated until navigation actually occurs WebView2 initializes asynchronously, meaning its properties … Read more
Summary This postmortem analyzes a common Visual Studio Code frustration: files opening in new tabs instead of reusing the same editor pane. Although it feels like a bug, it is actually a predictable interaction between VS Code’s preview mode, split editor behavior, and user settings. Root Cause The root cause is almost always VS Code’s … Read more
Summary This incident revolves around a Vim regex pattern that fails when both ‘ and ” must be included inside a search() function call. The failure manifests as E116: Invalid arguments for function search(…), caused by incorrect escaping inside single‑quoted Vimscript strings. Root Cause The underlying issue is improper escaping of quotes inside a single‑quoted … Read more
Summary The Flink job SinkUpsertMaterializer is continuously clearing state due to the table.state.ttl setting, resulting in incorrect results and task failures. The user has set the table.state.ttl to 24 hours, but is still experiencing issues, which were initially thought to be related to disk pressure errors in Kubernetes. Root Cause The root cause of the … Read more
Summary This incident examines a common misconception about inline functions in lexically scoped languages like Kotlin. The failure arises when developers assume that “inlining” means “copy‑paste the function body into the caller,” overlooking the strict rules of lexical scope resolution that still apply even after inlining. Root Cause The root cause is a misunderstanding of … Read more
Summary In Google Sheets, passing a string literal with a cell reference as a query string can lead to unexpected behavior. The issue arises when the query interprets the cell reference as a literal string instead of evaluating its content. This results in blank query results because the query searches for cells containing the literal … Read more