80C deductions not being allowed in ITR2 for old regime

Taxpayers attempting to file their Income Tax Return (ITR) using the ITR2 utility under the old tax regime are encountering an issue where 80C deductions are not being permitted. This appears to be a recurring problem, as multiple users have reported the same difficulty. While other deductions like 80G and NPS seem to be functioning correctly, the inability to claim 80C is causing concern and prompting questions about whether it's a software bug.