Hi! First off, thank you for building and maintaining tangled. It's awesome!
I noticed a minor bug today: on https://tangled.org/login , if you enter a handle with leading or trailing whitespace, and click the login button, it spins for a second, then does nothing. If you remove the whitespace, login works fine.
Tested on recent Firefox on Android and recent Chrome on macOS. Happy to pull the version numbers if you want, but since it's the same on different browsers and OSes, I'm guessing it's not browser-specific.