Watch4net/MnR - 7.X.X
This issue will be seen when there is a large number of users in that particular environment.
In catalina.log you will see this below error;
INFO: More than the maximum number of request parameters (GET plus POST) for a single request ([10,000]) were detected. Any parameters beyond this limit have been ignored. To change this limit, set the maxParameterCount attribute on the Connector.
Add this parameter "maxParameterCount" and the value to this in /<APG base dir>/Web-Servers/Tomcat/Default/conf/server.xml
as shown below in the Frontend host, restart tomcat and observe the behavior.
<Connector port="58443" protocol="org.apache.coyote.http11.Http11NioProtocol"
maxThreads="150" SSLEnabled="true" scheme="https" secure="true" compression="2048"
maxParameterCount="15000"
clientAuth="false" sslProtocol="TLSv1.2" URIEncoding="UTF-8"
sslEnabledProtocols="TLSv1.2" keystoreFile="conf/keystore"
ciphers="TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384, TLS_RSA_WITH_AES_256_GCM_SHA384, TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384, TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256, TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256" >