Issue:Arbitrary adding of empty paragraph

Description:	DPL inserts arbitrary empty paragraphs in some cases.
Extension / Version:	DPL   /   1.8.9
Type / Status:	Bug   /   open

Problem

I noticed a very strange behavior of DPL (1.8.9) on one of my wikis. The following tag version always produces an extra empty paragraph between the heading and the list, whereas the parser function does work alright, even with all those whitespace added to it. On my test installation (same provider, version - 1.15.3) both versions fail!

 == DPL Test - Tags ==
 <dpl>category=Dateiformate</dpl>
 

 == DPL Test - Parser Function ==

 {{#dpl:
 
 | category = Dateiformate
 
 }}
 

I wonder if anyone else has noticed a similar behavior and has an idea what might be the cause.

I have already had a look at Issue:DPL extension inserts a blank line headline but think this problem is unrelated.

tia Frank