In Panorama 6, datepattern(Date,"yyyyMM") will give a result of 201706. In iPanorama X, it gives zero. It’s necessary to use something like replace(datepattern(Date,"yyyy MM")," ","").
Is this a feature or a bug?
I don’t see how you could call it a feature. But as bugs go, it is about as minor as you could get. Panorama X does handle all of the combinations of three upper case date components jammed together, like MMDDYY, YYMMDD, MMDDYYYY, and a couple of others, but it does not handle combinations of only two components jammed together, or combinations with components jammed together with mixed upper and lower case. I’m not planning to change this, as you mention, there is an easy workaround.
I guess I can learn to live with it. Sigh.