You're probably right about running into the limit. Even after deleting all but 6 characters, in the shortest new-name example, the trailing space didn't reappear, but, like I said, it saved the name correctly… just didn't display it correctly until the save had been completed.
For example, I tried renaming preset 1:1, "Storyteller" as "Detune"… the "r" stayed on the end until I completed the save. I couldn't make it do it again, though, it only seems to be when I rename factory presets and then, not always, but only during the save. It's a really minor issue…
Thanks for looking into it!!
