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
