Bug#955267: gnome-calendar: Also appears on month view

[Calum McConnell]

Package: gnome-calendar
Version: 3.36.0-1
Followup-For: Bug #955267

I am experiancing the exact same issue on month view, with this calendar
imported:
http://calendar.google.com/calendar/ical/cheshire.k12.ct.us_5dpc4689dsv5p21e2ie9nvqknc%40group.calendar.google.com/public/basic.ics
In this calendar, every weekday has a day name: 'a' 'b' 'c' 'd', which is
represented by an all-day event.  The 'd' day events ONLY appear as a single
continuous all-day event accross the entire month, in addition to the normal
event.  Intrestingly, the date given for the continuous event in april is the
1st of may, which is a D day but is not displayed on the april month view.

Investigation of other calenders led me to the conclusion that all-day events
that occur on the first of the following month (eg, Feb. 1: First day of
Black History Month) are displayed throughout the previous month (Jan) as
all-day, every-day events. 

-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 5.4.0-4-amd64 (SMP w/8 CPU cores)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages gnome-calendar depends on:
ii  dconf-gsettings-backend [gsettings-backend]  0.36.0-1
ii  gsettings-desktop-schemas                    3.36.0-1
ii  libc6                                        2.30-4
ii  libcairo2                                    1.16.0-4
ii  libdazzle-1.0-0                              3.36.0-1
ii  libecal-2.0-1                                3.36.1-1
ii  libedataserver-1.2-24                        3.36.1-1
ii  libedataserverui-1.2-2                       3.36.1-1
ii  libgeoclue-2-0                               2.5.6-1
ii  libglib2.0-0                                 2.64.1-1
ii  libgoa-1.0-0b                                3.36.0-1
ii  libgtk-3-0                                   3.24.17-2
ii  libgweather-3-16                             3.36.0-1
ii  libhandy-0.0-0                               0.0.13-2
ii  libical3                                     3.0.8-1
ii  libpango-1.0-0                               1.44.7-3
ii  libpangocairo-1.0-0                          1.44.7-3
ii  libsoup2.4-1                                 2.70.0-1

Versions of packages gnome-calendar recommends:
ii  evolution-data-server  3.36.1-1

gnome-calendar suggests no packages.

-- no debconf information