prefs: [layout.css.scroll-anchoring.enabled:true] lsan-allowed: [Alloc, AllocateProtoAndIfaceCache, mozilla::detail::HashTable, mozilla::dom::Console::CreateInstance, mozilla::dom::Performance::CreateForMainThread, mozilla::dom::PerformanceMainThread::CreateNavigationTimingEntry, mozilla::dom::ProtoAndIfaceCache::PageTableCache::EntrySlotOrCreate, mozilla::net::nsStandardURL::TemplatedMutator] leak-threshold: [default:51200]