This blog is updated daily.
A general description is here.
tools::file_path_as_absolute() doubled the file separator when applied to a file such as "/vmunix" or (on Windows) "d:/afile" in a directory for which getwd() would return a path with a trailing separator (largely cosmetic, as reasonable file systems handle such a path correctly). (Perhaps what was meant by PR#14078.)
pchisq(x, df, ncp=L) no longer can return values slightly larger than
1, and for now gives an accuracy warning for L > 80.