Calc removes password from sheet in xlsx file created in Excel

I am aware that this topic may belong to bug submission, but since I don’t have any experience with submitting bugs, I wanted to ask here first.

When I create a file in Excel (Office 2016) with password protected sheet, save it in xlsx format and next open this file in Calc (LO version 6.0.7), it lets me to unlock protected sheet without password and any prompt. It lets you basically bypass password on sheets and view any hidden and locked cells.

Is this intended behavior (or one that can’t be resolved with how formats between this two programs work) or indeed a bug?

This surely looks like a bug. But you don’t mention your LO version.

Sorry, it’s version 6.0.7