game moves backward

SUNFOX

Game: freecell
Game #: 67839376
Browser: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_11_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/11.1.2 Safari/605.1.15
JS-Version: 2019-04-07_15:46:35_-0700_fd8dc0008ec81e4e5b7ec0e262803a256e5df53b

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Please describe the problem in as much detail as possible:

SUNFOX

Halfway through, the game starts moving cards backward to where they once were.

Imposter

Is it possible you are right-clicking your mouse? That puts cards back.