man-db segmentation fault after processing trigger

Almost every time I tried to install a package which processes trigger for man-db at the end of the setting up phase using apt, I get the segfault. The message "Segmentation fault (Core dumped)" appears.

I expected mandb to finish repopulating the mandb database so all the manual pages can be accessed via the "man" command. Instead, I got segmentation faults whenever it tries to populate mandb database.

It seems that there are invalid characters passed somewhere, but it shouldn't cause segmentation faults like this.

Here's an example of man-db segfaulting whenever I try to install a package: https://paste.ubuntu.com/p/wXsnfWvs8t/

Here's the output of dmesg: https://termbin.com/wtfd

Here's the output of mandb --debug: https://paste.ubuntu.com/p/7RbFrFv5t9/

Output of lsb_release -rd:

Description: Ubuntu Eoan Ermine (development branch)
Release: 19.10

Output of apt-cache policy man-db:

man-db:
  Installed: 2.8.6-1
  Candidate: 2.8.6-1
  Version table:
 *** 2.8.6-1 500
        500 http://sy.archive.ubuntu.com/ubuntu eoan/main amd64 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: man-db 2.8.6-1
ProcVersionSignature: Ubuntu 5.2.0-8.9-generic 5.2.0
Uname: Linux 5.2.0-8-generic x86_64
ApportVersion: 2.20.11-0ubuntu7
Architecture: amd64
CurrentDesktop: Budgie:GNOME
Date: Sun Aug 4 13:00:02 2019
InstallationDate: Installed on 2019-08-03 (0 days ago)
InstallationMedia: Ubuntu-Budgie 19.10 "Eoan Ermine" - Alpha amd64 (20190801)
SourcePackage: man-db
UpgradeStatus: No upgrade log present (probably fresh install)