Third party vendors/prospects/customers are not showing on any list

Greetings. I am trying Dolibarr on an OpenBSD Unix 6.7/sparc64 (yup, exotic hardware). High-level software is not a strong skill of mine, instead low-level programming in assembly.

So I installed Dolibarr 11.0.5 (according to Changelog file) and here is what it does.
I am adding third parties and they do not show up. I added one vendor and one customer. They don’t show when I click on any list. However in “Third parties and contact area”, at “statistics”, the server reports there’s one vendor and one customer:

Statistics
Prospects 0
Customers 1
Vendors 1
Total of unique third parties 2

They both can be seen on right side at “Latest 15 modified third parties” section.

Please advise.

Thank you.

Alright. Trying a new sollution:

rm -rfv /var/www/htdocs/dolibarr

mysql -u root -p
mysql> drop database dolibarr;
mysql> quit

cd /var/www/htdocs && tar -xzvf /home/skaarj/downloads/dolibarr-12.0.1.tgz

reinstalling the new release and try to get it working.
Thank you for 12.0.1. I will be back to tell about the behavior.

[LATER EDIT] problem is solved in release 12.0.1. Customer list is showing on screen.