If you can get the information when you do a CNTLOUT= or PRINT/FMTLIB option to display the contents of a user format, I would say that you should see the equivalent information from the DICTIONARY / SASHELP perspective, as well. My own test revealed the same symptom you reported, for both SAS 9.1.3 and 9.2. Sounds like a SAS support track opportunity - go for it!
Since I have never actually needed these values it never bothered me sufficiently to ask. Certainly the information is available, we see it when we use the CNTLOUT. The MIN= and MAX= options (on the VALUE and INVALUE statements) have some effect on the stored min/max values (as shown by the CNTLOUT), but not on those seen in the VIEWs.
These values are available, so I'll get them together. It is just less convenient.
Brought tegether, the information provides the foundation of a nice demo of what a format might provide and how width on the format influences the result.
For the built-in formats, there are some interesting variations, but only truncation on the user-defined formats I've checked so far.
When finished, it'll make a nice short paper-type demo.