from last

1 files changed, 2 insertions, 3 deletions

diff --git a/src/fields/util.ts b/src/fields/util.ts
index e439768ee..0f164a709 100644
--- a/src/fields/util.ts
+++ b/src/fields/util.ts
@@ -34,9 +34,8 @@ const _setterImpl = action(function (target: any, prop: string | symbol | number
         return true;
     }
 
-    if (value !== undefined) {
-        value = value[SelfProxy] || value;
-    }
+    value = value?.[SelfProxy] ?? value; // convert any Doc type values to Proxy's
+
     const curValue = target.__fieldTuples[prop];
     if (curValue === value || (curValue instanceof ProxyField && value instanceof RefField && curValue.fieldId === value[Id])) {
         // TODO This kind of checks correctly in the case that curValue is a ProxyField and value is a RefField, but technically