Comment # 8 on bug 1217688 from Jiri Slaby

It happens in 15sp6 too:
$ grep VERSION= /etc/os-release
VERSION="15-SP6"
$ rpm -q mariadb
mariadb-10.11.5-150600.2.6.x86_64
+-----------+--------+
| count(id) | sss    |
+-----------+--------+
|        50 | 001656 |
|        50 | 001657 |
|        50 | 001658 |
|        30 | 001659 |
|        50 | 001660 |
|        46 | 001661 |
|        50 | 001662 |
|        50 | 001663 |
|        50 | 001664 |
|        50 | 001665 |
+-----------+--------+