Copying and pasting a custom attribute definition in the Component Editor dialog seems to not be copying some of the settings like default/min/max/etc. It does still copy the name and label and style.
How are you making this happen, just copy and pasting a custom par in the Component editor? It works when i test this in 2019.10700. Could you give exact steps to reproduce?
Thanks
Looks like this was fixed in 2019.10700.
Yeah had a problem in recent builds. Fixed.