There is a poll to bring back this feature here:
http://archicad-talk.graphisoft.com/viewtopic.php?t=36786
Not many votes either way (yet)...
A possible workaround is to use the Special Menu 'Place all Objects' command from the Special Menu which will flood the floor plan with one copy of every library object for viewing in 2D or 3D:
http://archicad-talk.graphisoft.com/viewtopic.php?t=6484
This is not as useful as the old PDF though because the old catalog showed some of the possible variants for objects - e.g., tables that change shape and leg configuration. The Place All will only show the default parameters, hence just one table in this case. One would still have to fiddle with objects (usually furniture) to see what secrets lurk inside.
Cheers,
Karl
One of the forum moderators
AC 28 USA and earlier • macOS Sequoia 15.2, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB