This is NOT cosmetic or translation issue and issue is that inappropriate cultural id in some construct files in the template files. Although I think it might not impact to functionality (but who knows), it’s worth to check and clean them up - they should be corrected anyway.
File name: blue-spheres-letterhead_27139010_TF34279830.dotx
(\word\header1.xml)
Inappropriate value:
<w:lang w:val="en-IN" w:eastAsia="en-IN”/>
Expect: the ll-cc values are wrong, they should be ja-JP (and probably "eastAsia" can be omitted)
(word\glossary\styles.xml)
Inappropriate value:
<w:lang w:val="ja-JP" w:eastAsia="zh-CN...
Comment: I think "eastAsia" can be omitted, but please confirm.
File name: filter-function_27139030_TF00513226.xltx
(xl\drawings\drawing(x).xml) (x) is numeric value
Inappropriate value:
<a:rPr lang="ja-JP" altLang="it-IT”….
<a:rPr lang="it-IT”…
Expect: 'altLang="it-IT”' shouldn't be there, and 'lang="it-IT”' should be 'lang="ja-JP”'
Comment: I referred German template file to check if the altLang exists but I cannot find the altLang in German template file.
File name: How-to-ace-a-Skype-interview_27138780_TF16411062.potx
Inappropriate value:
<a:rPr lang="en-US" altLang="ja-JP”/>
Expected: <a:rPr lang="ja-JP”/> (no altLang)
Comment: I don't know how the template files are localized but the inappropriate cultural id could be injected from OS environment if I understand correctly. The template files should be clean.
