According to ICAO, a closed runway is supposed to be marked with one or more crosses along the centreline, so this little cross offset to the side that we see in one of the earlier postings might indeed be a bit misleading.
The key word here is "closed runway".
Closed runway, per definition, is a runway once in use, present in older maps and approach charts, which shouldn't be used any more, for whatever reason.
The "runway" in question was just a construction site, a straight strip of concrete, changing it's appearance every day, as new layers were put on top of older one.
There were no centre line markings, no threshold markings, no old paint.
The crosses you refer to are usually put on "closed runways" to avoid confusion, when the remains of old markings are still there.
Nevertheless, as seen on the image posted above, there were crosses present. If they are to small or to big, is irrelevant. It was not "closed runway", it was a construction site.
I would be glad to know, that pilots are not inclined to "have an impression" that a 2 miles straight strip of concrete is a runway, when there are no ICAO crosses on it.
In Poland military is still using parts of motorways as emergency runways. When under construction, they look very much like a normal runway, with turning tarmac on each end, and parking tarmac in close vicinity. And there are no crosses. So, be careful, flying next time to Poland.