This is about dolphin-16.12.2-1 in Arch.

Created items are selected correctly at first. However, after going up from a folder to its parent, created items aren't selected in the parent folder anymore.

I played with the code and found the cause. After going up, for some reason unknown to me, the url argument of "DolphinView::observeCreatedItem(const QUrl& url)" gets a double slash before its last part, like this:

QUrl("file:///home/pedram/Documents//Text File") 

The issue can be fixed (worked around) by using "QUrl::adjusted()", like this:

void DolphinView::observeCreatedItem(const QUrl& url)
{
    if (m_active) {
        QUrl realUrl = url.adjusted(QUrl::NormalizePathSegments);
        clearSelection();
        markUrlAsCurrent(realUrl);
        markUrlsAsSelected({realUrl});
    }
}