https://sourceforge.net/tracker/index.php?func=detail&aid=3420438&gr...
MarioMey just reminded me that Ctrl-Return created an object in 0.42.5, 0.43 is just missing the binding in the above bug report. Here's how to re-add it in a GUI plugin:
bind all <$::modifier-Key-Return> {pdsend "$::focused_window reselect"}
Or add this if you want just hitting enter to create:
bind all <Return> {pdsend "$::focused_window reselect"}
I also attached the file, if you just want to drop it to install it:
http://puredata.info/docs/faq/how-do-i-install-gui-plugins
.hc