Custom properties removed when file saved

[hansh1212]

When an avro schema (avsc file) contains any custom properties for any of its elements, the custom properties will appear in the custom properties section of the form. However, when the file is saved after any edits, these custom properties get stripped from the file.

For example, if we had a schema file containing a custom property that tags fields as containing personal identifying information ("pii" : "true"):
...
"fields" : [ {
"name" : "id",
"type" : "string"
}, {
"name" : "fname",
"type" : "string",
"pii" : "true"
}, {
"name" : "lname",
"type" : "string",
"pii" : "true"
}, {
...
Although the custom properties will appear in the schema editor, when you save the file after any changes the custom properties will no longer appear:
...
"fields" : [ {
"name" : "id",
"type" : "string"
}, {
"name" : "fname",
"type" : "string",
}, {
"name" : "lname",
"type" : "string",
}, {
...