I’m so sorry I couldn’t send a video. This is one of those reports that needs a video for more detailed investigation. I apologize for the inconvenience. Luckily I just found out exactly where this bug occurs. When you click the insert button in icon sets. After that, the initial width and height values ​​are reset. So just to be sure, the steps are as follows:
Add an icon element and in it, set an icon from the icon sets and set the width and height for it.
Open icon sets again, and insert an icon. The initial width and height values ​​will be reset.