That is not logical at all…
Does that mean, when I set to “Ask”, that Avast BS does no evaluation of it’s own? BS is based on evaluation, or isn’t it?

If BS can Auto-Decide (and it MUST, it is a behaviour shield…), then this should be done always. If this auto-decision leads to “suspicious”, then it should ask/block/allow according to what I have selected.

Seems I don’t really understand how that BS thing works and why there is an “Auto Decide” setting.

Okay, when set to “Auto”, pop-up is not present.

You probably didn’t get a pop-up, because I observed this:
When set to ask, only the first time I opened IE 9 this pop-up showed. It did not occur until the PC was restarted. Then, when opening IE 9 the first time: pop-up - but only this one time.