Maintainers for xscreensaver-gl are Tormod Volden <debian.tormod@gmail.com>.
You may want to refer to the following packages that are part of the same source: xscreensaver, xscreensaver-data, xscreensaver-data-extra, xscreensaver-gl-extra, xscreensaver-screensaver-bsod, xscreensaver-screensaver-webcollage.
You might like to refer to the xscreensaver-gl package page, to the Package Tracking System, or to the source package src:xscreensaver's bug page.
If you find a bug not listed here, please report it.