First, thanks for the new version I like the new features ( explain plan, coloring for connection, look a feel improvements to name a few ) and also while testing some out found some old ones I didn't know existed.
In the previous versions I would open a function , procedure and with in the working window could compare the open code to file on disk. Currently all options are grayed out. Was very useful to verify that the code in the database matched the code we have in SVN before I made any changes. Hope the feature can be turned back on.
Bugged and will be fixed for 4.0.
Thanks for reporting this, it's not an intentional change from previous version.