Not a bug. Space is caused by your zoom level. If that space was reduced, those pop-ups would overlapse if you zoom out.
That is NOT true. The issue is there even if I have zoomed out to the max. What's more, this is a new issue that was not there in the previous versions.
In fact, here are a couple of screenshots as proof:
This is me collecting from Olympic Treasury zoomed IN to max.
This is me collecting from Athlon Abbey while Zoomed OUT to max.
In both cases the space between the collected resources is the same. In fact, I can't even see all the resources collected because some are outside the visible area.
So yes, this is very much a bug, and very confusing, too - when collecting from several buildings at once it makes it hard to keep track of what was collected and from where. Now
please do your job properly and report this bug instead of lying to us that it is not a bug.