Build 2181 both 32- and 64bit versions on Windows 7 x64.
Whenever the auto-complete popup opens (either automatically or manually invoked by hitting Ctrl-Space), it leaks exactly 6 GDI handles which are never returned. This can be verified with either task manager or Windows process explorer.
It's not a major thing, but may affect users who tend to use the editor for very long sessions. Leaking GDI objects usually means to leak memory as a side effect.
To verify that it is not caused by a plugin, I re-tested it with a completely fresh, secondary installation, using the portable package and the behavior did not go away.
Customer support service by UserEcho