Both examples in https://gitlab.gnome.org/GNOME/zenity/-/issues/58 to reproduce the issue now work fine. The examples from the manual page are also working.

So far no issues observed on my Fedora 23 test system with this version. I was not able to test the upgrade using the commands listed in comment 4 of bug 1266255.

no issues seen so far, for me bug 1148493 seems to be fixed with this update