Do not use “Block Not Selected” option if you should allow access to the “Posts” menu.
‘edit.php’ URL (which is needed to edit selected post) is obviously not selected at admin menu (as this link is not included to the menu) and thus it is blocked.
I did not get to the conclusion (universal decision) how to resolve similar issues for this moment.
Please try the development version 4.19.b7, which you can get after login from the same download page. It addresses some “Admin menu access” add-on issues related to those you described.
Permanently I live in Russia (GMT+6). But currently and until the next weekend I’m in Czech Republic (GMT+2) and have access to the computer by the evenings only.