Done. one quess solved it all

Fun Expert ... fairly easy :

Exper.t. I thought it was an easy .... When that x-wing just solved it for me.

Why doesnt it show questionmarks and other normal signs any more

That sentence ended in a questionmark.

Just trying question marks

They dont show for me either!!!

Implied message: Nothing may now be questioned. The new version of science, perhaps. A bit scary.

probably to prevent script hacking. what about backslash prefix

nope

go

x-wing solves it

- it shows this one

no it doesnt