Brave used 100% on a core for a PDF

[pes10k]

The 100% CPU tab was only rendering a PDF: https://0x65.dev/static/docs/studies/hpn_v2.pdf

Brave | 1.20.40 Chromium: 88.0.4315.5 (Official Build) nightly (x86_64)
-- | --
Revision | d2abe4588adaeb0d66aa0a0106675be1dff12c64-refs/branch-heads/4315@{#11}
OS | macOS Version 11.0.1 (Build 20B50)
JavaScript | V8 8.8.224
User Agent | Mozilla/5.0 (Macintosh; Intel Mac OS X 11_0_1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4315.5 Safari/537.36
Command Line | /Applications/Brave Browser Nightly.app/Contents/MacOS/Brave Browser Nightly --enable-dom-distiller --disable-domain-reliability --no-pings --extension-content-verification=enforce_strict --extensions-install-verification=enforce --origin-trial-public-key=bYUKPJoPnCxeNvu72j4EmPuK7tr1PAC7SHh8ld9Mw3E=,fMS4mpO6buLQ/QMd+zJmxzty/VQ6B1EUZqoCU04zoRU= --sync-url=https://sync-v2.brave.com/v2 --lso-url=https://no-thanks.invalid --variations-server-url=https://variations.brave.com/seed --enable-features=LegacyTLSEnforced,AutoupgradeMixedContent,WebUIDarkMode,ReducedReferrerGranularity,PasswordImport,PrefetchPrivacyChanges --disable-features=AutofillEnableAccountWalletStorage,TabHoverCards,TextFragmentAnchor,WebOTP,NotificationTriggers,PasswordCheck,NetworkTimeServiceQuerying,IdleDetection,AutofillServerCommunication,PrivacySettingsRedesign,SignedExchangeSubresourcePrefetch,SafeBrowsingEnhancedProtection --flag-switches-begin --enable-features=LegacyTLSEnforced,AutoupgradeMixedContent,WebUIDarkMode,ReducedReferrerGranularity,PasswordImport,PrefetchPrivacyChanges,DnsOverHttps --flag-switches-end
Executable Path | /Applications/Brave Browser Nightly.app/Contents/MacOS/Brave Browser Nightly
Profile Path | /Users/pes/Library/Application Support/BraveSoftware/Brave-Browser-Nightly/Default

[pes10k]

Spindump.zip