Subsection lvl 2 doesn't display last messages

[Arskrigitsioniets]

Smf 2.0.15. Subsection lvl 2 doesn't display last messages. For example:

Strategies (category) > Global Strategy Games (section) > Strategy Games of Paradox Interactive (subsection) > Stellaris (subsection lvl2)

When I write something in the subsection lvl2, it doesn't display in:
1. The right block of category (see attachment #1)
2. In the block "the last messages" above the footer (see attachment #2)

What's the problem?

[Kindred]

there is no problem.

That is completely intentional and by design.
The count and last messages only goes 1 layer deep because it is an "expensive" query, and for it to be run on the main index of the site could cause many shared servers to over load - depending on the traffic on your site.

Additionally, if you have things buried that deep, chances are you have not properly thought out the design of the boards, since it is very likely that you don't actually NEED that level of granularity nor will most forums have the posts needed for that level. (from your description, it sounds like you are using empty boards as additional sub categories, which is, overall a poor choice of design)

[albertlast]

This issue got fixed by smf 2.1 beta4+,
also a lightwight query should be merge in the next time: https://github.com/SimpleMachines/SMF2.1/pull/4794
by this the time consuming is reduced when modern database like mysql 8.0, mariadb 10.2 or postgres are used.