There's a problem with the hyphenation for Catalan. Specifically, the hyphenation of the letter combination «l·l» (ela geminada) is not correct. If you look at the image below, you'll see that Publisher brokes the word «instal·laria» like “insta- l·laria” while the correct division would be “instal- laria”: the middle dot must be replaced by a hyphen.
Here's a screenshot of the concerning rules in the hyphen_ca.dic, that works as expected in InDesign but not in Publisher. I think this is probably a bug on the layout engine.
I'm attaching hyphen_ca.dic. Probably this will be useful for you to make tests.
hyph_ca.dic