id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
16084	WMTS does not support different tile sizes for layers using the same projection	StefanB	team	"In imagery for Slovenia we have a reference to WMTS service:
https://josm.openstreetmap.de/wiki/Maps/Slovenia#GURS:DTK5wmts
Which fetches capabilities from
http://prostor4.gov.si/ows2-gwc-pub/service/wmts?request=getCapabilities

Some of the layers there are in an older national projection EPSG:3912 (https://epsg.io/3912 = D48/GK), and those layers are not positioned correctly in JOSM (eg in lower zoom it is shifter 100km to the north). This old projection is being phased out, but some legacy data is still in it.

The layers in newer projection EPSG:3794 (https://epsg.io/3794 = D96/TM) are positioned much better

Whenever needed and possible, we use http://geocoordinateconverter.tk/ to convert data from the old projection to ETRS89 accurately, but int this case the layers are served via wmts service, giving us no influence.

Either
* EPSG:3912 projection should be better supported (probably not easy) to position the layer better or
* disable such layer selection in the ""Select WMTS layer"" dialog window
* add some additional warning that layer might not work at all

Current ""Select WMTS layer"" dialog:
[[Image(https://i.imgur.com/D3TWN0d.png, 500px)]]
"	defect	closed	normal	18.03	Core imagery		fixed	projection slovenia wmts