Upgrade from 7.5.1 To 7.5.3: Case updates shows Undefined for new or old data

I rencently upgraded from 7.5.1 To 7.5.3

Under cases module -> Case updates section shows Undefined for new entry i add or for older entry which was there earlier.

See scrreshot i attached with this question.

I have tried following so far

  1. Under Admin -> Repair -> Quick Repair And Rebuild, Rebuild Relationships, Repair Activities, Repair Non-Lowercase Fields, Repair Roles
  2. I have checked permissions for cache and other folders

So far no luck in getting it back, any suggestion or help would be appreciated.