htaccess – Issues login to my WordPress (flawed ?redirect_to= worth)

I’ve an internet site, as an instance www.instance.com.

It has a number of subdomains. Every subdomain factors to a subfolder of my host.

RewriteEngine On

RewriteCond %{HTTP_HOST} ^(?:www.instance.com)?$
RewriteCond %{REQUEST_URI} !^/www/
RewriteRule ^(.*) /www/$1 [NC,L,NS]

RewriteCond %{HTTP_HOST} ^(?:datas.instance.com)?$
RewriteCond %{REQUEST_URI} !^/datas/
RewriteRule ^(.*) /datas/$1 [NC,L,NS]

So you may see that the www.instance.com factors to the /www subfolder, and that datas.instance.com factors to the /datas subfolder.

I’ve a WordPress set up put in in datas.instance.com/wordpress (subdirectory setup).

• siteurl choice is http://datas.instance.com/wordpress
• homeurl choice is http://datas.instance.com

When I attempt to log in, it does not work, it at all times loops to the wordpress/wp-login.php web page.

Additionally, I seen WordPress that the ?redirect_to parameter just isn’t appropriate :

http://datas.instance.com/wordpress/wp-login.php?redirect_to=httppercent3Apercent2Fpercent2Fdatas.instance.compercent2Fdataspercent2Fwordpresspercent2Fwp-adminpercent2F&reauth=1

as an alternative of

http://datas.instance.com/wordpress/wp-login.php?redirect_to=httppercent3Apercent2Fpercent2Fdatas.instance.compercent2Fwordpresspercent2Fwp-adminpercent2F&reauth=1

So, there’s an additional dataspercent2F worth that shouldn’t be there : I suppose that is associated to my .htaccess redirections.

What goes flawed right here and the way may I repair this ?

Thanks !