--- a/UI/PixmapCache.py	Tue Feb 19 18:16:45 2019 +0100
+++ b/UI/PixmapCache.py	Tue Feb 19 19:02:21 2019 +0100
@@ -42,7 +42,8 @@
         if key:
             basename, ext = os.path.splitext(key)
             if size and not size.isEmpty():
-                key = "{0}_{1}_{2}".format(size.width(), size.height())
+                key = "{0}_{1}_{2}".format(
+                    basename, size.width(), size.height())
             else:
                 key = basename