Breakpoints are dislocated.

[Mng12345]

As the screen-shot, the breakpoint i add in the file of _build/default is dislocated, and some are unrerified.

[Mng12345]

May be the comment causes dislocated?

[sim642]

I've seen it in some copied/preprocessed files that try to preserve the original location mapping through pragmas like # 1 "original_module.ml, for example at the top of the module. I think dune's copy_files# and cppo insert those.