[libreoffice-users] "search" does not find "("

Good morning
(Windox XP desktop, LO 3.3.0)
just noticed:
the "search" function DOES NOT find ordinary brackets: (, ), [, ] etc.
(not regular expression etc. ...)

THESE are not any form of special characters.
Every software I know of with a search function can find these ASCII
characters.
What is so special about them, that LO does NOT find them (they are
right there on the screen!).

Recently I have started working with LO, but this kind of really stupid
"problems" makes me wonder ...

In case there is a solution, I would like to hear it.

Thank you.
Thomas


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