1.7.8 visor bug?

After upgrading to 1.7.8 pressing option twice the file window appears.
Pressing option twice does not disappear window. Only cmd-w works.
Now again pressing twice option button no file window appears. Bug?

Running 10.11 bèta (15A278b)

I’m unable to reproduce this one. :frowning: Visor works as expected for me under El Capitan.

Anyone else seeing this issue?