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v18.2.56 introduced error if a column has a filter property and a filterItemTemplate defined. It seems this change introduced the issue. This StackBlitz is a reproduction of the issue.
The console shows the following error:
zone-evergreen.js:364 ERROR TypeError: Converting circular structure to JSON
--> starting at object with constructor 'TView' | property 'blueprint' -> object with constructor 'LViewBlueprint' --- index 1 closes the circle at JSON.stringify () at ColumnsDirective.push.../../node_modules/@syncfusion/ej2-angular-base/src/complex-array-base.js.ArrayBase.isChanged (complex-array-base.js:147) at ColumnsDirective.push.../../node_modules/@syncfusion/ej2-angular-base/src/complex-array-base.js.ArrayBase.ngAfterContentChecked (complex-array-base.js:202)