After maybe a couple of minutes of running fine, my Azure Spring Apps starts to constantly reload on the client side browser. This behavior then goes away and starts coming back after a couple of hours and under load. Most of the time this issue is happens with the error:
java.lang.UnsupportedOperationException: Unexpected message id from the client. Expected sync id: 3, got 4. more details logged on DEBUG level. at com.vaadin.flow.server.communication.ServerRpcHandler.handleRpc(ServerRpcHandler.java:314) at com.vaadin.flow.server.communication.UidlRequestHandler.synchronizedHandleRequest(UidlRequestHandler.java:114) at com.vaadin.flow.server.SynchronizedRequestHandler.handleRequest(SynchronizedRequestHandler.java:40) at com.vaadin.flow.server.VaadinService.handleRequest(VaadinService.java:1573) at com.vaadin.flow.server.VaadinServlet.service(VaadinServlet.java:398) at com.vaadin.flow.spring.SpringServlet.service(SpringServlet.java:106) at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:658) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:205) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:149) at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:642) at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:408) at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:313) at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:277) at org.springframework.web.servlet.mvc.ServletForwardingController.handleRequestInternal(ServletForwardingController.java:141) at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:178)
I have a suspicion that is related to this issue: https://github.com/vaadin/flow/issues/12640
But I need a solution now, as the web is nearly unusable this way.