Mapillary-JS: Viewer not working when DIV is intially hidden

Not sure if this qualifies as a bug, so I’m asking here first:

The JS Viewer only works for me if the DIV it loads into is visible at pageload (apparently). If it’s CSS display is set to none and I show it on a button click, I get

Error: attribute d: Expected path command, “M 0 0 NaN NaN A 1 1 0 …”. in apply-properties.js:64 and a “broken” viewer. (tested in latest Chrome and Firefox)

Full test code (without my client ID) is at

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