Bug? Move/Copy Parts Seperator Issue

Hello,
Firstly thanks for the continued support and for the recent major release, love the new features!
However, today, when I'm trying to use the Move/Copy Parts while using the Separator, it is adding my separator "-" to both ends of the filename. If I recall correctly, on v3, this wasn't the case.
Example:
current filename: "V4 Bulk Rename Utility.png"
Intended new filename by moving first 3 to position 21: "Bulk Rename Utility - V4 .png"
BRU V4 generated new filename using " - " as separator: "Bulk Rename Utility - V4 - .png"
Adding a secondary separator wasn't the case on V3.
Firstly thanks for the continued support and for the recent major release, love the new features!
However, today, when I'm trying to use the Move/Copy Parts while using the Separator, it is adding my separator "-" to both ends of the filename. If I recall correctly, on v3, this wasn't the case.
Example:
current filename: "V4 Bulk Rename Utility.png"
Intended new filename by moving first 3 to position 21: "Bulk Rename Utility - V4 .png"
BRU V4 generated new filename using " - " as separator: "Bulk Rename Utility - V4 - .png"
Adding a secondary separator wasn't the case on V3.