<noscript> tag doesn't work when JS is blocked by security slider at Safer
The HTML tag is supposed to be hidden when JavaScript is enabled, and get displayed when it's disabled. Websites use it to inform users what things are broken without JavaScript.
When the security slider is set to Safest, all JavaScript is disabled, and the tag works like expected. But when it's set to Safer, JavaScript is disabled on non-HTTPS websites (including HTTP .onion sites), but the tag doesn't display, but it should.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information