Seems that the problem is coming back with piwigo 12.1 and the current versions of batch downloader and the bootstrap darkroom theme :(
I don't know why but at theme "modus" I see the "oldschool" zip icon of the batch downloader. At the bootstrap darkroom theme I see nothing but in the middle of the two icons I got the message "Alle Bilder dieser Auswahl herunterladen" and it works. But I didn't see the icon :(
The problem only appears when batch-downloader is setup to allow only one size of photo:
In that case, the button is actually there, but not rendered properly:
Originally posted by @CRi83 in https://github.com/tkuther/piwigo-bootstrap-darkroom/issues/4#issuecomment-338640141
Seems that the problem is coming back with piwigo 12.1 and the current versions of batch downloader and the bootstrap darkroom theme :(
I don't know why but at theme "modus" I see the "oldschool" zip icon of the batch downloader. At the bootstrap darkroom theme I see nothing but in the middle of the two icons I got the message "Alle Bilder dieser Auswahl herunterladen" and it works. But I didn't see the icon :(