True. There seems to be a problem. Awaiting fix for this. Thanks

IMHO, the issue is that, when using List Categories, "all" is not taken into account as the Option for "all" is "-1"
Also, no choice for "None".
The problem would also exists for other components than com_content.
See the code in default_items.php:
<?php if (count($item->getChildren()) > 0 && $this->maxLevelcat > 1) : ?>

So, whats the solution? Thanks

We have to make a PR correcting this behavior... In the xml as well as the display. If nobody does it, I will look at it in a few days.

I'm now looking into this: will report shortly (24h max) if I feel like pushing something...

I would like to report on this issue here, step by step as I proceed, so that someone can "stop" me as soon as I'm taking a "wrong way". If this is inappropriate and considered a nuisance... well... stop me!

First report:

• Issue confirmed
• The "None" option doesn't seems to be needed as what is indicated in the options as a "Subcategory Level" is instead "Categories level", i.e. 1=only topmost categories and hence 0 will mean... nothing displayed! This is also consistent with what we do in the back-end for the "Max Levels" options in the various "Search Tools". I propose to change the string to "Max Levels" here too
• As a simple quick-and-dirty solution (if there is nothing better and obvious to do) I'm fancying the idea to equate -1 to something really big. Would 9999 suffice? Who in the world would need more than 9999 categories levels? OK, let's make it 2147483647!
• There is an issue in the "accordion" expanding icon: it is always a + sign, while it should become a - when the corresponding level is opened. Will look into this
• As far as regards articles count, it is now interpreted as the count of articles belonging directly to a category (excluding articles in its sub-categories). I think this is OK.

We have a PR with a first tentative commit (a.k.a "The kludge")

@smz: you are right: "None" makes no sense.

Test instructions:
Set Park Site as top category.

"Subcategory Levels" in the "Categories" tab deals with the subcategories of the TOP category
1 => one level subcategories will display Park Blog and Photo Gallery
2 => 2 levels down will also display Animals and Scenery as sub of Photo gallery

@smz proposed solution smz@d752324 works fine here.
When set to All, in this example, 2nd level will now display.

@infograf768 hmmm... the fact that you pointed to the initial commit and not to the PR makes me think that you don't like me having addressed the icon issue in the same PR... Is this the case? Do you want me to get rid of that and eventually propose a separate PR? No problem for me...

Yes, I agree with the interpretation of "Subcategory Levels": do we want to change strings here?

ops, just saw the PR, did not see the # in #4937 (comment)
will look now

Ouch! My bad, I forgot to mention it... PR is #5469!

Closing this, as #5469 is merged.

Set to "closed" on behalf of @Harmageddon by The JTracker Application at issues.joomla.org/joomla-cms/4937

This seems to be broken again in the recent Joomla Versions

@fbc can you please open a new Issue as Comments on closed Issues didn't get much Notice.