Extreme Focus Stealing Prevention doesn't prevent windows from jumping to front

I'm using KDE and have focus stealing prevention set to "extreme". According to the documentation, this means "All windows must be explicitly activated by the user." However, Warframe is still capable of jumping to the front of the screen while I'm tabbed out. I don't think Warframe is actually stealing focus, it's just displaying itself in front of what I tabbed out to see. Is there another setting that deals with this sort of behaviour? I couldn't find anything in Window Management.
Was this page helpful?