What is untranslated?
Bugs can't be fixed unless you specify where they are.
Right, the untranslated part that I noticed is when you made your changes from Basic Block/ Staircase properties, next to the button after you press "OK" will appear 変更有り, meaning "Changed". I could not find this line.
In the about section, the names are unchanged. Here's the list (Some unknown names are not translated. Leave it as it is) :
An analysis text collaborator
While I was able to locate this string, it's in a confusing hex form. I changed one number and the whole part will display an error upon opening. Post the line and what I should type in once you found them.
I also did some final polishing in your translations. Should look fine now.