I could cry that you didn't post your question sooner. The only mistake you made was running it with the tires off the ground. Had you just set it down and gone out and drove it, you'd have known you were done.
Unless you have a locking axle, which is only used as an option on rear axles, it is common and normal for just one wheel to rotate. It all depends on which one has the least friction. When you see the one wheel rotating, if you use a board to stop it, you'll see the other one start to spin. Be careful when you do that because the tire can catch that board and shoot it out.
Another thing to look at, with the tires off the ground, is when the transmission is in "park", when you rotate one tire forward by hand, the other one will rotate backward. That always works on the front. When you do that on the rear of a rear-wheel-drive vehicle, the same thing happens unless it has a locking axle. In that case, you won't be able to turn either tire by hand, but if you shift the transmission out of "park", both tires will turn the same way when you turn either one of them. They will turn with quite a bit of resistance because you're also turning the driveshaft and some of the transmission's internal parts.
Thursday, May 25th, 2023 AT 7:19 PM