Solved Category Permissions tab- Missing Acces Level

Hello,I am running into an issue with Kunena 6.4.3 on Joomla 5.3.1 where the "Access Level" dropdown is missing under the Category Permissions tab when setting up or editing a category.What I see ( gyazo.com/604c9d23d7bfa577c7a69ea0bc4e295d ):

• The dropdown for "Access Control Type" is present
• When I choose "Access Level", the expected "Access Level" field does not appear, or is not present

What I expect ( gyazo.com/9cf8c80379e5d36567ea1b3d0501efb3 ):

• When "Access Control Type" is set to Access Level, I should be able to choose from Public, Guest, Registered, etc.

Steps I have already taken:

• Verified permissions – I am logged in as a Super Administrator.
• Used  Aurelia- with overrides in place
• Checked database tables – All tables are intact, no corruption or anomalies.
• Cleared Joomla and browser cache
• Ran Kunena Diagnostic Tool – Everything passed multiple times
• Removed table overhead – Optimized all tables.
• Uninstalled and reinstalled Kunena – Chose the clean install with fresh database tables.
• Reconfirmed Aurelia template is default – (no idea why this would affect admin, but worth a try)
• Ran Kunena Diagnostic Tool again -  Decided to run it once more before posting all is good.

I am at a loss and unsure what else to try. This is currently blocking my ability to set category-level access properly. I also have a few smaller issues I will post separately, but this is the main one for now. Any help or direction is greatly appreciated. Thank you for your time and assistance.Best regards,
Sarr
 

I decided to dig in a little deeper. The content is there, however, it is being displayed. I am looking into the permissions again, but everything seems to be good. I am on the super admin account. I am attaching the image here. Perhaps this can help? Maybe? 

gyazo.com/501fd4fc90dfbd96a3664e2593c37608
 
 

Strange. Unable to reproduce in 3 different Kunena installations. And as far as I know there haven't been any changes in related files since k 6.3.10. So it might be a conflict (js?) with another extension, Do you see any error when turning either Joomla debug and/or Kunena debug on?

I find this very odd as well. Fortunately this is on our dev and test, not production site. 
Odd thing is, we have the same exact structure between dev, test and production, minus the versions. And it works as expected on production. I will add comparison screenshots. 
Outside of the Joomla and Kunena versions, the only other difference is that I only have a couple test categories on production, where I had built them out on dev. 

Production site:

• Joomla: 5.3.0
• PHP: 8.3.21
• SQL: 8.0.42
• Kunena: 6.4.2

Dev & Test: 

• Joomla: 5.3.1
• PHP: 8.3.21
• SQL: 8.0.42
• Kunena: 6.4.3

Minus Joomla and Kunena versions, everything else is the same. All components, plugins, scripts, styles, images, etc. This is really confusing! Any Ideas?

My next move is to revert all updates on dev, and start by upgrading Joomla, then Kunena to see if I can reproduce this, again! But this time, check at each update. Joomla, Then Kunena, then the Kunena plugins. Maybe I can find the cause.

gyazo.com/be36f49bb36e69e1d7ec3a6cd46395be
Dev is on the left, Production is on the right
 

From one of your screenshots, I can see that JomSocial seems to be installed. There is a backward compatibility conflict affecting both JomSocial and CommunityBuilder, and as far as I remember, this was fixed by an update to this software.
What happens if you disable the Kunena - JomSocial Integration plugin?

JomSocial is installed on dev and production. I do not use community builder, nor is it installed nor the plugins for Community Builder. 
Jomsocial version is the same: 4.9.5

I did try disabling the jomsocial/kunena plugins. No change. Again, same setup between dev and production, minus the two versions of Kunena and Joomla.