As I already wrote you on the mailing list these menu accelerators and shortcuts are processed by wxWidgets/wxGTK/GTK. This can't be influenced by Hugin. So check which change in the above mentioned packages broke them.
As I already wrote you on the mailing list these menu accelerators and shortcuts are processed by wxWidgets/ wxGTK/GTK. This can't be influenced by Hugin. So check which change in the above mentioned packages broke them.