I think I just bumped into a weird character issue. I fed a string to an array using regex that allow for multiple delimiters (“ or ” = quotation marks). See code below. The body of the wiki page turned up blank. The problematic part of the string appeared to be the en dash – (not to be confused with - or the em dash) in combination with those delimiters. Removing it from the string solves it as does including the en dash among the delimiters.
{{#arraydefine:@somearray|Bla bla bla bla – oh well bla bla |/[“”]/}}
{{#arrayprint:@somearray|;}}
Not sure if those quotation marks hold any special meaning in the syntax.