Lovelace is visibly broken suddenly

A couple of days ago I upgraded to Core 2023.3.6
I’m running Home Assistant OS in a vm and have for years.
I have now noticed that lovelace is broken

I tried rolling back the latest backup and restarting Home Assistant but the problem remains

The broken UI is across browser types as well as both IOS and Android HA Apps. Not really sure how I can track down where the problem is

Functionally, Home Assistant seems to be working fine. I don’t expose HA to the internet.

The exact versions are below:

 Home Assistant 2023.3.5 
Supervisor 2023.03.3 
Operating System 9.4 
Frontend 20230309.1 - latest 

Any idea how to track down HOW and WHY this is happening? (and ideally a fix?)

I have HACs but I only have a single Solar module from HACs installed

I have the following Addons installed

I take backups regularly and I store them in multiple locations so in theory baring a failure in actual backup processes i have good backups. The last backup I tested was a full backup March 24 which restored fine to a secondary vm.

Any help is greatly appreciated

Addons below… it wouldn’t let me post more than one screen cap in the same post

Summary

April Fools’ Day

Search for card mod April fools

It’ll only affect you today. It was in April fool’s joke from last year.

good grief… i didn’t even realize what day it was!