How can I get my custom css to work again?

[minemap-nl]

Hello,

I use a very special Authentik theme using extra css, which is a combination of other themes and some things of my own. It's not perfect, but it's in my opinion a lot better than the stock theme. But after the upgrade to 2025.12, it changed. My custom css just doesn't work anymore. Something called shadow-DOM is in the way. My question is, how can I get it working again, because my in between option is terrible, and I am very tempted to just revert back to 2025.10 and never upgrade again. Also don't judge me for my css code, it is not optimized at all, but it worked fine for me.

(maybe this is a more technical question or has to do with a bug, idk, but please also tell me in that case, so I can forward this to the right place)

—update—
It got fixed in 2025.12.3