OK  if anyone wants to fix this up prior to us issuing another update you need to make two small file edits as follows:

1 – /simple-press/sp-startup/sp-load-core-admin.php

Locate the code line:

add_action('admin_head', 'sp_set_custom_dashicon');

and comment it out or remove it – then save the file.

2 – /simple-press/admin/resources/css/spa-dashboard.css

Add anywhere – top or bottopm the following

#toplevel_page_simple-press-admin-panel-forums-spa-forums .wp-menu-image:before {
    content: 'f125';
}

and then save the file.

Much obliged. All is well again.

not sure why its only affecting some users (does not happen on any of my sites or our sp sites), but it was wrong… sorry…

Thanks, this is what our admin looked like with the midnight admin theme. Fixed now with the changes suggested.

yes, as posted in multiple topics, it was wrong…   just wish it would have affected everyone the same so we would have known and fixed it before we released 5.4… 

but the permanent fix will be in the next version… sorry for the trouble…