Family BS

Sooo where to begin. My husband and I have an almost one y/o and ever since she's been born my husband has found things that bother him about my dad. It basically hurts my feelings because I love my dad and my husband and conflict makes me uncomfortable. My husband doesn't ever say things directly to my dad just me so my dad has no clue about any of this. So I feel weirdly stuck in-between. Over the past few visits this is what has happened: my dad held the baby and she (at around 7 months) bonked her head hard on the table because he didn't have the best grip on her-to me it sucks but it's an accident-my husband felt the need to rant about it continually to me. My dad stayed at our house and opened a window and didn't close it after leaving. This upset my husband. Another visit my dad turned off an air filter because he thought it was too loud (it was on to keep extra white noise for baby sleeping). This upset my husband. And then there's little personality things that bug my husband. So now I'm fighting w my husband over this-i feel it's no big deal little things and he just keeps talking crap about my dad to me and he just doesn't get that all I want is for him to just suck it up when he visits and be nice. it causes contention between me and my husband every family visit and we are supposed to be having a nice visit. Do you all think my husband is overreacting or is justified? Should I have my husband go directly to my dad with his issues next time or would that start more unneeded drama? Keep in my these things about my dad literally do not bother me at all so for me it's not worth a fight and I'm always surprised at how much it bugs my husband.