In the custom window the accentuation failed in the first letter that I added accentuation. Then I went to the status window and the accent did not fail.
This test I did in the last beta version.

When you say "it failed in the first letter":

Do you mean that you tried to type -quickly- and it failed?

If you type -slowly-, pressing the sticky key first, and then the letter, does it work in the custom @window?

So far, it sounds like the issue is due entirely to the speed that you press the keys?