There are currently no open bugs.

"php-constant-time" versions published in Ubuntu

Jammy (2.4.0-1): universe/misc
Impish (2.4.0-1): universe/misc
Hirsute (2.4.0-1): universe/misc
Focal (2.3.0-1): universe/misc
Bionic (2.2.0-1): universe/misc