TaskDialog doesn't work in 64-bit Take Command

This command in TCC 32-bit (on 64-bit Windows 7) produces the proper TaskDialog

C:\Users\GSchizas>taskdialog ok "One" "Two" Three
The exact same command in TCC 64-bit (same system) does absolutely nothing.

This is probably related to the missing Common Controls dependency in the manifest, as is the flat buttons in config dialogs.
Problem was fixed in 11.0.31.