Your exclusively is a guess that you made up. Why are you presenting it as if it was authoritative?

Here is my guess about why you might believe that.

Solaris has had 64-bit support for a long time, people don't upgrade Perl rapidly there, and people often use Solaris for dealing with large amounts of data. So this combination arises relatively often.

It does not happen as much on Windows because most people don't throw around files over 2GB on Windows, and those who do usually are running a relatively recent system. It does not happen as much on Linux because Linux added support for files over 2 GB relatively recently, so if your kernel is recent enough to handle the files, then you probably have a recent version of Perl installed at near the same time. It does not happen as much on FreeBSD because there are fewer FreeBSD people.

However on any OS, if you have Perl without large file support dealing with large files, it will not work.