As far as I can tell, 3.1.1.0 Beta behaves the same as 3.1.0.5 Beta in regards to my problem with finalizing.

This time, I did notice that the "Finalizing..." message was shown for a few seconds, but it went much faster than usual, and dvdfab_vso_burn.log still shows that it spent 4 seconds finalizing the disc. Nero's CDSpeed still shows the disc status as open.

The somewhat good news is that to try to finalize this disc, I first tried ImgBurn. First Tools > Drive > Close > Track and then Tools > Drive > Close > Session, both of which resulted in a few seconds of DVD drive activity, and then Tools > Drive > Close > Disc, which didn't seem to have any effect. CDSpeed stills shows the disc status as open, but my DVD player is able to play this disc just fine, so at least it isn't a coaster for me..

I expect that for my next copy, unless DVDFab Platinum is updated again by then, I'll try using the Nero burning engine instead of the VSO burning engine.

I've never had the problem of DVDFab "freezing" or taking an unreasonable time in the finalizing stage, so I wouldn't know whether there's been any change with that problem.