Taps getting unloaded when not in focus
I'm always using Vivaldi with two windows. One "normal" window and one incognito window. I've 10 to 20 taps open. One of the windows contains the WhatsApp web wrapper.
My problem is: Vivaldi unloads taps which are not in focus, so if I'm browsing through different taps WhatsApp gets unloaded after some time so I don't get any notification for new messages (desktop notifications are turned off). Also other tabs which were previously loaded are getting unloaded an have to be reloaded when coming back to that tab.
Did I miss an option here or is this a wanted, unchangeable behavior?