Here is what happens.
I have my default language set to Dutch.
I have the site set to the Dutch language and I make a post in Dutch.
This post displays correctly.
When switching to English (my site default), the English translation works fine and the original Dutch tekst shows up fine as well.
However, when I switch the site back to Dutch, the original text doesn't show correctly.
For example, I entered this in Dutch:
Nog een andere test, hopelijk gaat het nu wel goed.
But now it is showing this when viewing the site in Dutch:
Nog EEN-Andere testen, hopelijk gaat nu WEL Het Goed.
When I switch back to English, everything shows up fine again, including the original Dutch text.
Check out this thread:
Site translator