Bug#989831: konsole: Bitmap fonts rendered incorrectly if display scaling is enabled

[Tim Small <tim@seoss.co.uk>]

Package: konsole
Version: 4:20.12.3-1
Severity: normal
Tags: a11y
X-Debbugs-Cc: tim@seoss.co.uk

When a bitmap font is selected, and display scaling is also enabled (KDE
-> System Settings -> Display Configuration -> Global scale != 100%),
then the fonts are rendered at their unscaled size (this is expected for
bitmap fonts), but instead each character is rendered with large amounts
of surrounding space.

T h e   e f f e c t   i s   a   b i t   l i k e   t h i s ,  a n d   i s

n o t   u s a b l e .

I'm not sure if this is a konsole thing, or a qt/kde thing.

Thanks!

Tim.

p.s. I've tagged this as a11y because I use bitmap fonts AND high dpi
displays to avoid chronic eye strain (without which I am limited to
about 30 minutes max screen time per day).  Whilst I can use vector
fonts (e.g. Hack), and also disable font smoothing in the Konsole
settings, the resulting fonts look quite ugly, and aren't as easy to
read.  So, I think I consider this an a11y issue (albeit quite a niche
one).



-- System Information:
Debian Release: 11.0
  APT prefers testing-security
  APT policy: (500, 'testing-security'), (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.10.0-7-amd64 (SMP w/4 CPU threads)
Kernel taint flags: TAINT_CRAP
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages konsole depends on:
ii  kio                    5.78.0-4
ii  konsole-kpart          4:20.12.3-1
ii  libc6                  2.31-12
ii  libkf5configcore5      5.78.0-4
ii  libkf5configwidgets5   5.78.0-2
ii  libkf5coreaddons5      5.78.0-4
ii  libkf5crash5           5.78.0-3
ii  libkf5dbusaddons5      5.78.0-2
ii  libkf5globalaccel-bin  5.78.0-3
ii  libkf5globalaccel5     5.78.0-3
ii  libkf5i18n5            5.78.0-2
ii  libkf5iconthemes5      5.78.0-2
ii  libkf5kiowidgets5      5.78.0-4
ii  libkf5notifyconfig5    5.78.0-2
ii  libkf5widgetsaddons5   5.78.0-2
ii  libkf5windowsystem5    5.78.0-2
ii  libkf5xmlgui5          5.78.0-2
ii  libqt5core5a           5.15.2+dfsg-7
ii  libqt5gui5             5.15.2+dfsg-7
ii  libqt5widgets5         5.15.2+dfsg-7
ii  libstdc++6             10.2.1-6

konsole recommends no packages.

Versions of packages konsole suggests:
ii  lrzsz  0.12.21-10+b1

-- no debconf information