I'm trying to resolve this issue
According to http://discuss.cocos2d-x.org/t/cocos-creator-v1-5-0-release/37004
[Render] set cc.macro.FIX_ARTIFACTS_BY_STRECHING_TEXEL macro back to 0 to fix the problem that the surrounding pixels of texture will be cut off. But this change will cause the issue that tiledmap may produce a black seam when zooming and paning. You can fix it by generate a tiledmap map with extruded pixel around each tile (If you use the shoebox to generate a map, you need to set extrude to 1, padding is set to 2)
I now have a sprite sheet with spacing between the tiles and extruded the pixels around each tile. It did help when zoomed in but when I zoom out a lot it still happens.
I have tried setting some defaults in the code to:
cc.macro.FIX_ARTIFACTS_BY_STRECHING_TEXEL = 0;
cc.macro.SPRITEBATCHNODE_RENDER_SUBPIXEL = 0;
But it doesn't really help.
Does anyone know how to fix this?