Fixing multiple selection bug that should have been fixed in https://trac.osgeo.org/grass/changeset/47033

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@47377 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/gui_modules/gselect.py

@@ -245,7 +245,7 @@ class TreeCtrlComboPopup(wx.combo.ComboPopup):
         if not root:
             return
         found = self.FindItem(root, value)
-        
+        self.value = self.GetCombo().GetValue().strip(',').split(',')
         if found:
             self.value.append(found)
             self.seltree.SelectItem(found)