Can't save state(s) in Prboom (Doom) anymore?

[RK.aus.S]

Hi

Today, I noticed that I can't save states in Prboom (Doom) anymore? I get a yellow message in the left, lower corner "core does not support save states".

Some weeks ago this was working for sure. I think I'm crazy. What the hell did I do wrong?

Regards
Roman

Update: Sorry, I'm really getting old; it was Wolfenstein where I could save states...
I would like to delete this post, but it's too late.
Sorry again, my fault.