org-capture broken?

[Greg Minshall]

hi.  with a recent org-mode (*), `org-capture` seems to crash with the
message:
----
Variable binding depth exceeds max-specpdl-size
----

this happens with (a suitably -L'd) `emacs -Q`
- M-x org-capture
- t
- then crashes

after this crash, i seem to be unable to enter the debugger, etc.
(`(setq debug-on-error t)`) doesn't work after this crash.  my only
recourse appears to be to exit emacs.

stepping through the code, the last routine
was`org-capture-fill-template`.

stepping through this routine, it gets as far as `(org-mode))` in (i
assume)
----
      (let ((org-inhibit-startup t)) 
----
and, in "that" routine, the (presumably) infinite recursion/loop
happens.

i'm loathe (intimidated) to follow the trail into the main code.  i
wonder if anyone might have any ideas?

cheers, Greg

(*)
Org mode version 9.5 (9.5-ga149fd @ /home/minshall/.emacs.d/straight/build/org/)