Carrying forward authorization to a new tab

Brave fails to carry forward by authorizations from one page to another

  1. Sign in to blogger, page presented is the editable list of posts as expected
  2. Press button view blog, page is opened in a new page as expected
    Error: In the top right hand corner, the page says sign in.
    Expected: I expect to be able to edit various parts of the blog that are add-ons. The editing buttons are not available because my authority to edit is not carried to the new page.

Always reproduces. If I then sign in, I am presented with the list of posts. It is thus impossible to maintain some parts of the blog.
Version 1.5.115 Chromium: 80.0.3987.149 (Official Build) (64-bit) Windows 10 Home

This means that I cannot use Brave for some functions that otherwise work on Chrome.