Caesura and fermato

best Dorico friends,

I have a question about a ceasura in combination with a fermato.

When I place the fermato on the last note, the seasura disappears before the last note. And when I place the ceausura before the last note, the fermato disappears???

What to do?

thanks for help,

Bernard

They cannot be both on the exact same (grid) beat, information here: