Test when loaded a second time has an illegal URL redirect error:

basic: exception: illegal URL redirect.
java.lang.SecurityException: illegal URL redirect
    at com.sun.deploy.net.HttpUtils.followRedirects(Unknown Source)
    at com.sun.deploy.net.BasicHttpRequest.doRequest(Unknown Source)
    at com.sun.deploy.net.BasicHttpRequest.doHeadRequestEX(Unknown Source)
    at com.sun.deploy.cache.ResourceProviderImpl.checkUpdateAvailable(Unknown
Source)
    at com.sun.deploy.cache.ResourceProviderImpl.isUpdateAvailable(Unknown
Source)
    at com.sun.deploy.cache.DeployCacheHandler.get(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown
Source)
    at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
    at sun.net.www.protocol.http.HttpURLConnection$6.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)

Last working version was 8u202, issue started with 8u212 upgrade.