current differences between -release and -experimental

librewolf.cfg:

lockPref("dom.w3c_pointer_events.enabled", true); -> This fixes YouTube picture-in-picture.
defaultPref("dom.event.contextmenu.enabled", true); -> This fixes lastpass.com context menu.
defaultPref("extensions.update.url", ""); -> enable in-app check manual check for extension updates.
Attempting new cookie behavior (use Settings > Cookies and Site Data > Manage Exceptions), these are the last three preferences in the cfg file: privacy.clearOnShutdown.cookies, privacy.clearOnShutdown.offlineApps, network.cookie.lifetimePolicy.