This turned out to be user error, compounded by new behavior and menu terminology in VBE2, as well as a not particulalry helpful help file.
The VBE opens in Gouraud view, which does not display shadows, so F3 has no effect. Switching to Headlight, which does support shadows, won't show them until you toggle F3, which didn't work before so I failed to try it in Headlight mode.
David Collins
Win11 64bit Intel i9 3.40 Ghz, 64 Gb RAM, GeForce RTX 5080
AC 29.0 (3100 INT FULL)