Loading an item in exhibits, will raise an unable to authenticate error on load

[mejackreed]

Expected behavior

Should not present a user with a popup on default

Actual behavior

Steps to reproduce the behavior

1. visit https://exhibits.stanford.edu/ua-maps-drawings/catalog/yd068bc5869

Browser / Environment

Chrome / macOS

[mejackreed]

No TileSource was able to open undefined Object reporting in OSD.. but strange not in other contexts. cc @aeschylus

[aeschylus]

Refreshing the page after seeing this, even without logging in, causes the entire viewer to be unclickable (no buttons or zooming work).

Currently comparing the initialisation code between contexts. The iFrame is the same in both cases.

The "no Tilesource was able..." nonsense is odd because the manifests are the same regardless of the embedding contexts, so OSD should have the same reaction to their tilesource JSON.

https://github.com/openseadragon/openseadragon/blob/248a001bb67c1f1184017c6ada23c6b1fce6ff3d/src/tilesource.js#L672-L685 (This is looping over all the tilesource types and calling their respective "supports" functions. None of them is successful, so it gives this error. I will try to get a breakpoint into the source somehow to figure out what its being fed.