OLS 1.5 rewrites doesn't work in depth path

After upgrading from ols 1.4 to ols 1.5 I found that rewrites in depth aren't recognized
RewriteRule ^design/imagini/parts-([a-zA-Z0-9\-]+)-([0-9]+)-([0-9]+)-auto-parts\.([a-z0-9]+)$ design/imagini/piesa.php?idgrd=$2&idart=$3&ext=$4
if path starts with ^parts-([a-zA-Z0-9\-]+)-([0-9]+)-([0-9]+)-auto-parts\.([a-z0-9]+)$ is recognized.
Same code on ols 1.4 works.
Can you give me more info about the rewrite rule?
Such as is it in .htaccess and which version of 1.4 and which version of 1.5.
We fixed a rewrite rule bug in 1.4.40 which should still be in 1.5rc version.