I have both and they are two separate animals. It does feel smaller inside but it's not an issue in my opinion. I love my Bronco but if you use your tuck to do truck things, you will miss it.
Just ignore the negative responses. I haven't heard of this before but would try and warranty it for sure. Let us know what hey say, I curious to see the outcome.
I purchased my current Bronco slightly used and the previous owner swapped out the antenna to a smaller stubby one and for some reason he also changed the aerial assembly. The gentleman that purchased my Bronco had passed away unexpectedly and I purchased it from his wife so I can't ask him why...