Vaadin 7.3.0.rc1 Freezes after validation error

[Yuriy4 (Yuriy Artamonov)]

@Leif Åstrand

I can’t reproduce this issue with 7.3.0.rc1 nor with the latest version from the master branch. What browser did you test with? Was push enabled? What theme did you use? Could you show the code you used when testing?

Probably it is problem with Gradle plugin and embedded jetty because after any exception on server side it freezes. It is not reproduced with maven.