I've not seen any, but I can put forward a theory. There are changes to the muscular structure during HRT, as well as differences in how fat is deposited. These factors could show as a change in hand/foot size, and may cause a very small reduction in height.
The skeletal structure is fixed in most of us be the time we start HRT, and even those who do start during their teens won'y see any reduction, and as such will not reduce in size, regardless of hormone regime..
And remember if you are measuring your height, you should do it first thing in the morning for the most accurate figure.