having a tag like this
<tag value="<?php echo $value; ?>">value</tag>
doesn’t highlight the php with the correct color scheme for it and treats it as an HTML String
having a tag like this
<tag value="<?php echo $value; ?>">value</tag>
doesn’t highlight the php with the correct color scheme for it and treats it as an HTML String

Cannot reproduce.
I guess you somehow use HTML syntax to parse/highlight a PHP file?