OK, small fix will be checked into GIT in the next day or 2. Thanks for reporting and for the extra hint below.

On Sat, Oct 26, 2019 at 10:32 AM Andrew Randrianasulu <randrianasulu@gmail.com> wrote:

Actually, if you click on small gear at the end of effect's bar - controls will work.
But just trying to call same window via effect's context menu will result in freeze.
got frozen Cin.