"Home" not changing in Breadcrumbs when switching languages (Locale)
Navigate to "Translate strings" interface in "Regional and language" admin section (/admin/config/regional/translate/translate).

Search for "Home" and translate all untranslated instances of that string. This should fix the issue with translation of default breadcrumbs.

Useful tip: strings search is case sensitive, so make sure you enter your strings as they appear in html source (this condition gets easily overlooked).