Polyobjects not showing in GZDoom?

[CorSair]

This polyobject shows easily in ZDoom. But when run in GZDoom, it is not showing up.

I just raised floor to certain height, put lower texture and wrote correct polyobject stats and that's it. Works as it should be.
It shows GZDoom if I delete sector but it looks... silly.

Pic how it should look (in ZDoom.)

[Blue Shadow]

I don't know, but it could be something similar to this.