skarasuko Thanks for your input! Let me make sure if I am understanding what you are saying correctly. As far as I tried it, it is true that the default position of the Rename <ItemType>
window immediately after starting Spine is in the center of the viewport, but if you then drag it around, it seems to remember that position even after the window is closed. I uploaded a video for clarification:.
VIDEO
Is your problem that you have to re-launch Spine frequently, and each time you do, you have to reposition the rename window? (The above video was recorded with 4.2.17-beta, but I have confirmed that even with 4.1.24 the window position is stored unless Spine is restarted.)