6.1.30 EE GA3, 6.2.X EE
Set up a cluster environment with two nodes.
1. Start node 1-> Control Panel-> Portal Settings-> Display Settings, save Available language to ar_SA.
2. Start node 2-> Control Panel-> Portal Settings-> Display Settings, save Available language to ar_SA.
3. Change node 1 Available language to ja_JP. Check database portalpreference table, the value is already set to ja_JP.
4. Check this value in node 2 in Control Panel Setting.
Result: This value is kept as ar_SA.
5. Manually change to ja_JP and save
Result: ar_SA is still displayed.