C-c . no longer inserts org-time-stamp (after upgrade to 9.5)

[Michael Maurer]

Subject line says it all, I upgraded to 9.5 two days ago and
everything seemed to work, but today I fire up the PC and C-c . no
longer is bound to anything. I guess I could custom-bind it in my
config, but I'm more interested in why it's happening. The last
package I installed after the upgrade was undo-fu and
undo-fu-sessions, but I dont' think they are involved.