Every so often I'll encounter an issue where the page freezes, but I can't discern what's behind it. So far it seems utterly random, with no consistent time interval or action that causes it, but perhaps something about the combination of website and browser (Firefox for Linux, if that matters). It's a pain to open a new tab (other tabs in the same browser window aren't affected), pull the puzzle in progress from the list of recents, and rebuild my solution all over again while the clock keeps ticking...
Working...
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