There are currently no open bugs.

"libsixel" versions published in Ubuntu

Kinetic (1.10.3-3): universe/misc
Jammy (1.10.3-3): universe/misc
Focal (1.8.2-2.1): universe/misc
Bionic (1.7.3-1): universe/misc
Xenial (1.5.2-2): universe/misc