Hello,

Looks like a minor bug in Piwigo 2.10.1, but may be it's only for me...

If you want to create sub-album in the existing album and open upload Web-form (see screenshot 1), there is no link to create sub-album.
But if you temporary switch to another "bookmark" on the same page, for example "Application", and than switch back to Web-form, button "+" will appear to the left from the name of the parent album (screenshot 2).

Piwigo version: 2.10.1
Linux
PHP version: 7.0.33-0+deb9u5
MySQL version: 5.7.27-30
Piwigo URL: https://terijoki.spb.ru/photos/