There are many glitches in Scratch, and this page exists because there was one too many of them.
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Scratch 1

* When you type a number small enough, (0.00000... ...00000000001) it displays NaN. It then does calculations like the number is irrelevant, even when it is not. This may be because Squeak cannot hold a large enough number in the memory. Seen in .4 --SimonMould
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Scratch 2

* Calculation Errors
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Scratch 2 Offline Editor

* When updating to .0v404 (from version unknown, possibly .0v403), the update bar goes further than the grey loading area. --SimonMould
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