[FIX] server: ensure type alias ref is a class or type alias itself t…

…o display name

server/core/symbol.py

@@ -534,6 +534,9 @@ def get_paths(self):
             return self.parent.get_paths()
         return []
 
+    def is_type_alias(self):
+        return self.eval and not self.eval.instance and not isinstance(self, ImportSymbol)
+
 class RootSymbol(Symbol):
 
     def add_symbol(self, symbol):

server/features/hover.py

@@ -45,16 +45,17 @@ def build_block_1(symbol, type, infered_type):
 
         type_ref, _ = symbol.follow_ref(context, stop_on_type=True)
         type_str = "Any"
-        if type_ref != symbol: #if the symbol is evaluated to something else than itself
+        if type_ref != symbol and (type_ref.type != SymType.VARIABLE or type_ref.is_type_alias()): #if the symbol is evaluated to something else than itself
             type_str = type_ref.name
         #override type_str if the effective_sym is built by a __get__ and our symbol is an instance
         if factory and effective_sym: #take factory value only on instance symbols
             type_str = effective_sym.follow_ref({}, stop_on_type=True)[0].name
         type = str(symbol.type).lower()
-        if symbol.eval and not symbol.eval.instance and not isinstance(symbol, ImportSymbol):
+        if symbol.is_type_alias():
             type = "type alias"
             type_alias_ref = type_ref.next_ref()[0]
-            if type_alias_ref != type_ref:
+            if type_alias_ref and type_alias_ref != type_ref:
+                type_alias_ref = type_alias_ref.follow_ref({}, stop_on_type=True)[0]
                 type_str = type_alias_ref.name
         if symbol.type == SymType.FUNCTION:
             if symbol.is_property: