Alright, so I don't think this isn't much of a bug.

When you center and submit your Bio (the other thing that isn't About Us), it "looks centered" when you finally view it, but it looks like its leaning to the left side a little bit.

I know how to center, even removed the centering completely to try to center everything again.

Examples:

View my Bio and compare it to my About Us that has proper centering. Also view other stable's Bios for examples (the stables that editted their Bios)

we used text or images or tables but that doesnt matter i think

Are you using a table? Or just posted the images?

Mine doesn't have a table, just basic centering and Insert>Image for texts and images.

I think if you put a table in the bio and centered it, it be centered but still misaligned. Coming from Star Catcher's bio that has a table but the centering is misaligned. https://horseeden.com/stable.php?id=294151

This is happening for me too. I can't center images in About Us or my bio.

Same here. Only for my Bio though, not my About us.

This appears to still be an issue on mine and other pages that I've viewed their editted bios out of curiousity.

The about us page does not take large files, I believe, so try something smaller like text. But no, no images in either text box are centered no matter how I change the file dimensions. Perhaps you could add a feature where you can align insterted photos? :)

My issue is more on the Bio box. My About Us box is aligned fine.

Alrighty, my Bio looks kinda fixed right now?

Fixed, thanks!