I'm stumped, and quite a lot of searching has turned up nothing helpful.
I'm on the first step of what will ultimately be a map with three raster layers and three layers of markers (with controls to toggle between the rasters and their associated data, with popups/tooltips for the data), but I can't get the Tilemill tiles to render properly. (I created the rasters in QGIS, ran them through GDAL to colorize and re-project them, and then put them into TileMill.)
To wit: That's in Chrome. This is Safari:
And here's the code, which looks quite innocuous to me (I've commented out everything but the tiles at this point, so that's all I've included):
Has anyone ever encountered this problem? If so, how did you overcome it? I'm eager to start into the rest of the process of making this map (by which of course I mean "uncovering the next problem to solve").
Edited to add: I tried re-exporting a new MBTiles file, uploading it as new data, and creating a new Mapbox project from that data. No dice. Next step in isolating the issue would be to set up the MBTiles file on a server, skipping Mapbox, but that seems more likely to create problems than to fix them.