I'm a little surprised about a new yellow icon. It appears in the main menu above the writing "PortableApps.com" and consists of three yellow semicircles with a vertical line (like a multi-armed candlestick).
https://picload.org/view/dclpcwwd/unknownicon.png.html
What does this mean? When you click on it it disappears!
I also can't say exactly since when this appears. I only noticed this now after the update to V16.