Bug#1066100: freeciv: new cities unmanageable in a long game

[Giacomo Mulas]

Package: freeciv
Version: 3.1.0+ds-1
Severity: normal

Dear Maintainer,

in a long game with a huge map, I hit a weird bug. 
New cities are unmanageable, i.e. I cannot:
- change their production
- set them as "home" for any unit
- add settlers to them
etc.

I will send a saved game that shows this in an additional subsequent message to this bug report.

Bye, thanks in advance
Giacomo

-- System Information:
Debian Release: trixie/sid
  APT prefers unstable
  APT policy: (401, 'unstable'), (10, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.7.7-amd64 (SMP w/12 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=it_IT.UTF-8, LC_CTYPE=it_IT.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages freeciv depends on:
ii  freeciv-client-gtk3  3.1.0+ds-1
ii  freeciv-data         3.1.0+ds-1

freeciv recommends no packages.

freeciv suggests no packages.

-- no debconf information