Recently switched over to javascript and when loading some of them esri map services like the "WORLD_STREET_MAP" OR "WORLD_IMAGERY" it seems to randomly choose which tiles to load at a certain extent. sometimes when the map loads you have to zoom out very far before the tiles start to load and other times they will load fine.
Have been trying to get this resolved but the problem doesnt happen all the time, we used the samples on the esri site for reference and those always seem to load fine.
Any ideas or suggestions would be appreciated
Thanks