There are some aspects I truly love about working from home. I mean, I don't have to wear pants, I get to spend more time with my kids, and my husband also works from home and that's, for the most part, totally awesome. As much as we love being "co-workers" (for the daytime sex alone), though, there are fights every couple has when both parents work at home and we've pretty much had them all.
Don't get me wrong, my husband and I love each other deeply and always try to respect each other's need for space, quiet time, and boundaries at home, during both work and non-work hours. But when you spend 24 hours a day with someone, even someone you love, you are bound to disagree every once and a while and sometimes at the worst possible moment. Some of your fights will seem like normal office spats, like the ones you might have with a coworker when they drink the last of the coffee or eat your lunch from the office refrigerator. Others are more like stereotypical parenting disagreements, like when you both try to avoid changing a poop-filled diaper. And then there are the arguments that are more like lover's quarrels, usually related to whose turn it is to do the dishes.
When your partner is also your office mate, and the only other adult you might see every day, things can get complicated, petty, and intense. The good news is that when you fight with your partner while working from home, in my experience, it's pretty impossible to hold grudges, and you have the added bonus of being able to kiss and make-up afterwards. At least, after your partner makes you more coffee, of course.