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Question: "Error, (in simplify/size/collect_and_recurse) invalid arguments to coeffs" (Bug of the general Maple simplifier?)

Question:"Error, (in simplify/size/collect_and_recurse) invalid arguments to coeffs" (Bug of the general Maple simplifier?)

sursumCorda 1079 Maple 2023
simplify
March 31 2023
4

As you can see, if I want to simplify the following expression, I shall have to run the simplify command three times, and if I add some assumptions, the global simplify command will no longer work! 

:-simplify(2*(x^2+1)^(1/2)*(x+y+(x+y)/(x*y-1))^2/(((1/2)*(x+y+(x+y)/(x*y-1))*(2*x+(x+y)/(x*y-1)+y)/(x^2+1)^(1/2)-(1/2)*(2*x+(x+y)/(x*y-1)+y)*(y+(x+y)/(x*y-1))/(x^2+1)^(1/2)+(x+y+(x+y)/(x*y-1))/x)^2*x));


Download collect_and_recurse)_invalid_arguments_to_coeffs_.mws

But here either Physics[Simplify] or evala@Simplify works (with a slightly different result, though). Does anyone know why?
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