How to apply multiple Twig filters to text - SOLVED
I believe filters are applied in the order they're written. So in your example you're probably applying the new line breaks with nl2br and then removing them again with hacksaw.

Try:

&lt;p&gt;{{ workItem.summary | hacksaw(words='75', append='...') | nl2br }}&lt;/p&gt;


Alternatively you could try setting hacksaw to allow line break tags. Something like this (untested):

&lt;p&gt;{{ workItem.summary | nl2br | hacksaw(words='75', append='...', allow='&lt;br&gt;') }}&lt;/p&gt;


I'd go with the first option though.