I checked the GIT repository and the bug in libxmlb has been there since, at least, version 0.1.8, the one used in bionic, as is also in 0.1.15 (focal, impish), 0.3.6 (jammy) and 0.3.8 (kinetic).
I checked the GIT repository and the bug in libxmlb has been there since, at least, version 0.1.8, the one used in bionic, as is also in 0.1.15 (focal, impish), 0.3.6 (jammy) and 0.3.8 (kinetic).