[BUG] Off-by-one error in width of Agenda window? [9.5.2 (release_9.5.2-25-gaf6f12 @ /data/installs/snapshots/emacs-28.1/lisp/org/)]

[N. Jackson]

Recently it seems as if Org Agenda thinks its window is one
character wider than it actually is. The incorrect behaviour I
observe is:

1. Tags in Agenda are all wrapped to the next line even though there
is plenty of space to display them on the same
line. (org-agenda-tags-column is set to its default value of `auto'
so I expect tags to be right aligned to the right edge of the
window.)

2. In a block agenda, the last '=' character of the block separator
is wrapped to the next line. (org-agenda-block-separator is set to
its default value of character 61 ('=') so I expect a line of equals
signs as wide as the Agenda window -- I don't expect it to be so
wide that it wraps to the next line.)


Emacs  : GNU Emacs 28.1 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.24.30, 
cairo version 1.17.4)
 of 2022-04-18
Package: Org mode version 9.5.2 (release_9.5.2-25-gaf6f12 @ 
/data/installs/snapshots/emacs-28.1/lisp/org/)