I can confirm that the xdaliclock 2.46 in Bookworm/testing works nothing like historical copies of the program. In my case, I have an ancient incantation buried in my .xsession file /usr/bin/xdaliclock -noseconds -nocycle -builtin1 -bg steelblue -fg black -geom -0-0 and the new xdaliclock understands none of those options.
Also, five minutes of digging revealed no documentation that any of those features are supported in some other way. Like Stefan, I reverted to the 2.44 binary that's part of Bullseye, and that works fine. I also confirmed that the xdaliclock_2.44+debian-2 source package builds and runs without issue in a Bookworm environment. If we keep xdaliclock 2.46 in Debian despite Jamie's hostility, can we at least give it a new name, and keep xdaliclock as the traditional (2.44) version? - Larry P.S. Can someone fix the Version tag here? It seems to have been confused by Stefan reverting to 2.44 before filing the bug report. This bug actually applies to 2.46 but not 2.44.