Спасибо за помощь, действительно проблема в .htaccess.
В итоге, правда, все записал в конфиг VirtualHost
<VirtualHost *:80>
ServerName symfony.test
ServerAdmin webmaster@localhost
DocumentRoot /var/www/projecty/web
<Directory />
Options FollowSymLinks
AllowOverride None
</Directory>
<Directory /var/www/project/web/>
Options Indexes FollowSymLinks MultiViews
AllowOverride ALL
Order allow,deny
allow from all
DirectoryIndex app_dev.php
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteCond %{REQUEST_URI}::$1 ^(/.+)/(.*)::\2$
RewriteRule ^(.*) - [E=BASE:%1]
RewriteCond %{ENV:REDIRECT_STATUS} ^$
RewriteRule ^app_dev.php(/(.*)|$) %{ENV:BASE}/$2 [R=301,L] ##### this is the part that you should tweak, have th$
RewriteCond %{REQUEST_FILENAME} -f
RewriteRule .? - [L]
RewriteRule .? %{ENV:BASE}/app_dev.php [L] ##### this is the part that you should tweak, have the .htaccess $
</IfModule>
<IfModule !mod_rewrite.c>
<IfModule mod_alias.c>
# When mod_rewrite is not available, we instruct a temporary redirect of
# the startpage to the front controller explicitly so that the website
# and the generated links can still be used.
RedirectMatch 302 ^/$ /app.php/
# RedirectTemp cannot be used instead
</IfModule>
</IfModule>
</Directory>
ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/
<Directory "/usr/lib/cgi-bin">
AllowOverride None
Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch
Order allow,deny
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/project.error.log
# Possible values include: debug, info, notice, warn, error, crit,
# alert, emerg.
LogLevel debug
CustomLog ${APACHE_LOG_DIR}/project.access.log combined