Applying "CSS+JS" breaks the steamwebhelper on the latest families beta

[Kennyluzz]

Today I updated to the Steam Families Beta client and the JS tweaks no longer work. I tried using Old Glory with the old method and Millennium, which refuses to work even with different skins while the JS is modified. I did everything in the troubleshooting/known issues sections, even reinstalling Steam completely. I also tried both a clean version of up-to-date OldGlory and my edits that work fine on the non-beta branch.
I also realize that this is a beta client and stuff might break but I assume this might affect the stable release when it eventually arrives.

[Jonius7]

Does it break the loading of the Steam client window or is it just the JS tweaks don't work?

It's possible the names of the JS files are changed in the Steam Families beta, they can be changed for OldGlory in old_glory_data.json.

[Kennyluzz]

Steam client gets broken and will refuse to work unless I RESET to remove the JS and reload the window.

[Jonius7]

It looks like Steam Families has been released onto stable. There may be a way to still have JS tweaks available by editing the JS files directly (byte-by-byte instead of line-by-line), but I am not sure how reliable this is. As of now, JS tweaks will not be working.