It comes from the PSAR logic. When the market is above PSAR, it allows long entries. When the market is below PSAr, it allows short entries.

But the PSAR  here used only as a closing point not opening logic condition !!

And if this is the case so using PSAR as a closing condition at any strategy makes it useles to use it again withing the opening logic conditions because using it as a closing only override (mask) its use as open logic ... Am i right

It comes from the PSAR logic. When the market is above PSAR, it allows long entries. When the market is below PSAr, it allows short entries.

Taking that into account, you'll see that both cases you report are correct.
1st case - Narrow Range gives permission in both directions, that would be an ambiguous signal without any other entry filters, but PSAR filters that.

2nd case - the position remains open until closing at PSAR. That's because the additional signals in the same and the opposite directions are set to "Nothing". That means no adding or reducing of a position.

And another Issue : If we look at the chart we will find that most of NR candles not picked in trades , the strategy select some candles to enter and missed the others