Updated after having tested in QGIS 3.4
Core question: Is there a way to properly display TMS-convention XYZ Tiles in QGIS 3.4?
If I try to display a "normal" XYZ tileset (like a Stamen set) and a "TMS" XYZ tileset in QGIS 3.2 using XYZ tiles, I get momentarily encouraged at zoom 0:
But any other zoom looks wrong:
Both tilesets look fine in Leaflet because in Leaflet I'm able to denote
tms: true when adding the TMS layer:
This all makes sense because the TMS convention has the
Y inverted (as compared to the "normal" XYZ convention).
Is there a way to properly display TMS-convention XYZ Tiles in QGIS 3.4?