Twice.
Once was just a really small company and it turns out the founders felt “betrayed” because we were “all in this together”. Except we weren’t. It was nights and weekends for me and they felt they’d put in their time way before I got there, so didn’t need to anymore. I gave notice, worked the day out, then got an email late that night that I shouldn’t come back to finish out my time. A few days later the person who asked me to join the company wrote me to apologize. Just different ways of handling things.
The other time might actually help your situation. I gave notice about 6 weeks before I was going to move to another city. Again it was a small team, this time within a bigger organization, and I had some responsibilities that only I covered, so I thought it was the right thing to do. My boss got really quiet and seemed distant for a bit, like yours.
I just wrote her an email and laid out clearly and kindly that I’d noticed a difference, didn’t want me leaving to affect the team or my relationship with the people there, and asked if there was anything I could do. She responded and asked if she could take me to lunch. At lunch she let me know she had just gone to bat for me in a round of layoffs that were coming and had asked for a raise for me and some others to keep her core team intact.
So, my timing probably couldn’t have been worse, without really knowing it. It wasn’t that she was upset or distant, she just had to reorganize and replan her whole group, very quickly, without letting anyone know, so she got quiet. She was busy and stressed.
A couple years later when I got back to town, she hired me back in a new role. I would have never applied if I hadn’t clarified what had gone on after giving notice.
Your situation may be similar to either of mine, or something completely different. It might be worth clarifying though and letting the “person in charge” you mention know what your intentions are in a kind way. Some people just assume the worst and there’s an imbalance of information that’s uncomfortable.