Game crashes

[vezaynk]

When going really high up, the game sometimes crashes:

Uncaught TypeError: Fa.threateningPiece.shape is null
    t https://lichess1.org/assets/_d3CRC1/vendor/ChessPursuit/bin-release/game.js:1
    j https://lichess1.org/assets/_d3CRC1/vendor/ChessPursuit/bin-release/game.js:1

I don't know how to dump the state of the game, so here is a screenshot:

[niklasf]

Source code location looks very similar to #3.

[anviks]

5 years later, still a problem