Purchase Order report - Item field

I need your help, please.

We have an issue on the Purchase Order report for the Item field derived as

_itemId += '\n' +  vendPurchOrderTrans.ExternalItemId;

But on the report even this field set as DynamicHeight=Yes it breaks it onto 2 lines but the ExtendedItemId still being cut off. I had to expand the ItemId field Width but it won’t solve the problem. The field is stretched but ExtendedItemId is still cut off.

Please advise