For C++ clang-format does things like that all the time as well. Of course it has no idea what semantically belongs together on the same line or not. I wish the C++ world had settled on some other standard linter.

clang-format is probably the worst of the autoformatters. They tried to get fancy with a sort of global optimisation algorithm but in practice it's buggier and uglier than the classic Prettier algorithm which is elegant and generally works very well. It's also way less diff friendly.

I wouldn't draw any conclusions about autoformatters from clang-format.