Would need to see the track layout in order to better respond. Issue suggests that / the parallel tracks coming out either of both ends for a loop, essentially creating a reverse loop.
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I am presuming the short is at the actually cross over and not at the frogs.
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Do you have a multimeter you can you use to confirm/test?
I created a photo in crossover wiring. ? I have each turnout isolated with plastic joiners marked in black in the picture. ?The dots are where I have the wires. positive and negative self explanatory. ?I have PECO Electrofrogs. ?The frogs are hooked up to a tam valley frog juicer. ?No other modifications were made to the turnout other than removing the spring. ?Why am I getting a short?