On Lead - cannot add 'companyname' field to system created view without workaround.

REPRO:
Lead entity -> open All Leads view
Add Columns
Look for 'companyname' -> it does not appear in the list of fields under Record Type = Lead

WORKAROUND:
Change Record Type to Parent Account for lead (Account)
Change record Type back to Lead
Sort on Name column
'companyname' is now visisble and can be added to the view


On a newly created view this problem does not exist.