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InverseFunction[ConditionalExpression[#, 0 <= # <= 1] &]
InverseFunction[ConditionalExpression[#, -1 <= # <= 1] &]

The first line produces what I would expect:

ConditionalExpression[#1, 0 <= #1 <= 1] &

But when I make the lower limit in ConditionalExpression negative, the inequalities become strict:

ConditionalExpression[#1, -1 < #1 < 1] &

Why is this happening?

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