# 3rd level category nesting and Header Categories Navbar TC interacting poorly
**URL:** https://meta.discourse.org/t/3rd-level-category-nesting-and-header-categories-navbar-tc-interacting-poorly/274131
**Category:** Bug
**Created:** [August 6, 2023, 10:36pm UTC](https://meta.discourse.org/t/3rd-level-category-nesting-and-header-categories-navbar-tc-interacting-poorly/274131 "2023-08-06T22:36:38Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@nathank](https://meta.discourse.org/u/nathank)
#### Post date: [August 6, 2023, 10:36pm UTC](https://meta.discourse.org/t/3rd-level-category-nesting-and-header-categories-navbar-tc-interacting-poorly/274131/1 "2023-08-06T22:36:38Z")
There is a bug in the interaction between sub-sub-categories and the navbar.
## Outline
I’ve got sub-sub-categories enabled on my site via this hidden setting:
```plaintext
SiteSetting.max_category_nesting = 3
```
After our last update of the site, the functionality seems to have broken.
The sub-sub-categories appear as they are meant to throughout the site, but when I attempt to click onto one of them I notice this:
1. The category page seems to load just fine initially
2. Then I get the spinning wheel of doom ☠
This error appears in the console:
(this doesn’t appear when in categories or sub-categories)
## Workaround / other issues
The sub-sub-category page actually loads okay _if opened in a new tab/window_, but there are glitches in the navbar functionality and this similar error in the console:
---
### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [August 6, 2023, 11:07pm UTC](https://meta.discourse.org/t/3rd-level-category-nesting-and-header-categories-navbar-tc-interacting-poorly/274131/4 "2023-08-06T23:07:49Z")
> [@nathank](#):
>
> the navbar.
This is a theme component right? Which one is it, can you link to it?
---
### Author:  [@nathank](https://meta.discourse.org/u/nathank)
#### Post date: [August 6, 2023, 11:29pm UTC](https://meta.discourse.org/t/3rd-level-category-nesting-and-header-categories-navbar-tc-interacting-poorly/274131/5 "2023-08-06T23:29:53Z")
Ah - I’m being a bit thick and equated the new terminology for the sidebar “i.e. Navigation” with this #official theme component:
> [@Header Categories Navbar](https://meta.discourse.org/t/header-categories-navbar/249179):
>
> discourse2Summary Header Categories Navbar is a simple component that adds a menu of parent category links to the site header, with horizontally scrolling overflow added if/when needed.eyeglassesPreview [Preview on Theme Creator](https://discourse.theme-creator.io/theme/Discourse/header-categories-navbar)hammer_and_wrenchRepository [https://github.com/discourse/discourse-categories-navbar](https://github.com/discourse/discourse-categories-navbar)questionInstall Guide [How to install a theme or theme component](https://meta.discourse.org/t/how-do-i-install-a-theme-or-theme-component/63682)open_bookNew to Discourse Themes? [Beginner’s guide to using Discourse Themes](https://meta.discourse.org/t/beginners-guide-to-using-discourse-themes/91966) Instal…
When I disabled that Theme Component, nesting works just fine.
My only issue is that I really rely on it! But I understand that I’m probably one of very few using this TC with 3rd level nesting.
---
### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [August 6, 2023, 11:31pm UTC](https://meta.discourse.org/t/3rd-level-category-nesting-and-header-categories-navbar-tc-interacting-poorly/274131/6 "2023-08-06T23:31:24Z")
Will mention this to Kris in case he has any easy ideas for a fix.
---
### Author:  [@awesomerobot](https://meta.discourse.org/u/awesomerobot)
#### Post date: [August 16, 2023, 6:41pm UTC](https://meta.discourse.org/t/3rd-level-category-nesting-and-header-categories-navbar-tc-interacting-poorly/274131/8 "2023-08-16T18:41:55Z")
This is fixed by: [FIX: update to support 3 levels of categories by awesomerobot · Pull Request #6 · discourse/discourse-categories-navbar · GitHub](https://github.com/discourse/discourse-categories-navbar/pull/6)
I just needed to make a small adjustment to accommodate for the additional category level. Thanks for reporting it!
---
### Author:  [@sam](https://meta.discourse.org/u/sam)
#### Post date: [August 20, 2023, 10:00pm UTC](https://meta.discourse.org/t/3rd-level-category-nesting-and-header-categories-navbar-tc-interacting-poorly/274131/9 "2023-08-20T22:00:46Z")
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