SAP Netweaver Java pages not displaying correct font size after Upgrade

 Problem :

After NetWeaver Java system has been upgraded from a version lower than Netweaver 750. You see have observed rendering differences such as oversized text and tabs or tabs grayed out. Facing issue in Firefox, Chrome, Internet Explorer also.

Solution :

Clear Cache from Netweaver Administrator

1. Clear HTTP server cache 

Navigate to /nwa -> Configuration -> Infrastructure -> Java HTTP Provider Configuration

2. Clear as shown below

Clear Cache J2EE shell console

1. Open telnet connection to the server using telnet hostname:telnet port and login with administrator user.

2. > add http

3. > clear_http_cache

Invalidate cache ICM Web Administration Interface 

1. Goto ICM Web Admin Interface

Navigate /sap/admin --> ICM --> Server Cache 

2. Now Select Invalidate Cache.

Clear Browser Cache

1. Now clear  your browser cache related to your URL.

Result: