Quotes in XML cause highlight issue

The following XML:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
    <dict>
        <key>Key1</key>
        <string>Quote start "</string>
        <key>Key2</key>
        <string>Quote end "</string>
        <key>Key3</key>
        <string>Test</string>
    </dict>
</plist>

Breaks the syntax highlighting between the use of quotes: