Git version, seems like one needs to zoom in to the left and right of the antimeridian intermittently to trigger it.
https://dump.bitcheese.net/files/cilubun/marble-teleportation.ogv demonstration
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Reproduces on git.
Tested it a bit more, and it seems to only occur when using mouse to zoom using Flat Map or Mercartor projections. It works fine using keyboard navigation or Globe.