remove space after period at end of paragraph

I tried using edit>find>project replace

In Find I enter:
. [ctrl+enter]
period space ctrl+enter (for paragraph symbol)

replace:
ctrl+enter

But didn’t work.

I had no problems removing tabs, reduce 2 spaces to 1 in text, …

Also tried copy in my text with invisible shown the above. Again, not work.

Anyone know how?

Thanks.
Richard