Personally I dislike the @ love, feels a bit like being in Objective-C land, imports feel like JavaScript AMD modules, and still use-after-free issues.
Otherwise it is pretty much Modula-2, with C flavoured syntax and compile time execution.
Well there are still quite a lot of compiler bugs. I personally have open issues going back as far as 2018. Knowing the compiler has bugs and that new ones are constantly being discovered makes debugging a pain because you have a lot less confidence that the problem is your code. I have many times blamed the compiler for my mistakes, something I've almost never done with C.
Otherwise it is pretty much Modula-2, with C flavoured syntax and compile time execution.
Overall, the use-after-free is what irks me.