Description:
When I change language to polish in settings (Narzędzia/Język/Dla całego tekstu/Więcej) and next I uncheck the box "Tylko w bieżącym dokumencie", polish language should be set there forever. Unfortunately if I create new document, the language is still changing to english. I'll add too, that it concerns only language of document, there's no problems with language of interface, and the problem doesn't appears if I make new document directly from LibreOffice Write, only using windows explorer context menu.
I think english language is set in something like template empty document somewhere in Windows registry, not the LibreOffice but I'm not sure because I don't know how it works in Windows. If it's true, maybe you just need to change this template deleting information about languages from it and load them from settings after launching this file in LibreOffice.
I could make some grammar mistakes in this bug report, but english isn't my native language. I'm sorry.

Steps to Reproduce:
1. Create new document
2. Go to Narzędzia/opcje/ustawienia języka/języki
3. Set default language of documents to Polish
4. Save file
5. Create new OpenDocument using windows context menu (in file explorer)
6. Open this document

Actual Results:
First saved file will be in polish language, and new created document will have english language even though polish was set to default.

Expected Results:
Language of new document should be polish.


Reproducible: Always


User Profile Reset: Yes


OpenGL enabled: Yes

Additional Info:
[Information automatically included from LibreOffice]
Locale: pl
Module: TextDocument
[Information guessed from browser]
OS: Windows (All)
OS is 64bit: yes