Just an additional clarification in case the other reply doesn't help: Your phrasing of "shows me a black formation" doesn't make sense unless it is rendering the page wrong for you. All the problems you've listed show both white and black stones on the board.

For example:

> In 2.16:

> 3 says I'm wrong for saying its alive. It's clearly alive. It's a big black formation with one eye in the corner and one eye at the bottom

Should look like:

  |
  | w w w w w
  | b b b b w
  |   w   b w
  ^^^^^^^^^^^^^
(I'm also using Firefox and it's rendering correctly for me)

For me 2.16 3 looks like:

|

| B B B B B

| B B B B B

| _ B _ B B

^^^^^^^

Link to screenshot: https://imgur.com/a/odDYg9K

When I use Librewolf I think I get the intended render, but using Firefox this is what I get