Yes. There’s a discussion on the iPhone accessories subsection here.
For what it’s worth, a few tried and true case styles from other manufacturers have been having similar fit issues. I guess it’s been a tough year for design and manufacturing oversight.
I assume you're talking about the original Apple leather case?
It wouldn't surprise me, the one I got for the iPhone X was a little off as well.
That said, the one I received for the 12 Pro Max was impeccably built and provides a snug fit.
Maybe there is a faulty lot out there, I'd certainly exchange it if it doesn't fit as it should.
Mine seems to fit well, but at first I hadn't snapped the top right corner all the way in. Once I did that, it's been fine. It's since been in/out of jeans pockets without popping out. Been using the leather case exclusively for about 24hrs now and really like it.
There was another thread where others are having fit issues, however.