I'm trying to change the patch size on my legend, but when I try to change the size it jumps back to the standard 24x12. It happens with everything on the panel and I can't figure out why. Does anyone know what is going on?
What version of ArcGIS Pro are you using? If it's not working like it says in the documentation (Work with a legend—Layouts | ArcGIS Desktop), I would tend to think it's a bug, unless it occurs only certain specific times.
You may also want to refer to this similar, previous thread: https://community.esri.com/thread/213422-arcpro-legend-will-not-resize-symbols-or-labels
I've tried to reproduce this with the latest release, 2.4.3, but haven't been able to. All my changes apply and are saved. Could you reach out to tech support and see if they can reproduce it with you?
Thanks, David