Integration Network WorkCenter Incorrect Formatting after PeopleTools upgrade

After upgrading to PeopleTools 8.53 from 8.50, Integration Network Workcenter in Portal 9.1 application was not displaying properly. The culprit was missing classes from cloned stylesheet. Used the below sql to identify the missing sub style sheets and classes from the cloned stylesheet class and copy them manually.

Screenshot of incorrect formatting.

select * from PSSTYLECLASS a where a.stylesheetname = 'PSSTYLEDEF_SWAN'  and a.styleclassname not in (Select b.styleclassname from  PSSTYLECLASS b
where   b.stylesheetname = 'PREFIX_PSSTYLEDEF_SWAN_PT850')

minus
select * from PSSTYLECLASS a where a.stylesheetname = 'PSSTYLEDEF_SWAN'  and 'PREFIX_' || a.styleclassname || '_PT850'  in (Select  b.styleclassname   from  PSSTYLECLASS b
where   b.stylesheetname = 'PREFIX_PSSTYLEDEF_SWAN_PT850')

Replace the compared to stylesheetname with your custom stylesheet name and also do not overwrite your custom styleclass if any. In this particular instance adding the below class from delivered 'PSSTYLEDEF_SWAN resolved the issue.

STYLECLASSNAME

----------------------

PSAVSCHART

PSCHARTGANTT

PSCHARTSTYLE_FREEFORM

PTAL_SUBSTYLE_REQ_SWAN

PTAL_SUBSTYLE_VL_SWAN

PTWC_SUBSTYLE_SWAN

PT_ACE_SS1_SWAN