REBATE U/S 87A IS NOT APPLYING FOR INDIVIDUALS FOR 2024-2025 ASSESSMENT YEAR FOR 139(8A)

Why our client is not getting 87A rebate for ITR3 for Assessment Year 2024-2025 even if submitted 10IEA in updated income tax return before due date ie., 31/07/2024. 87A rebate is applicable for total income is below 5 lakhs for old regime and new regimes and respective rebates are 12500/- and 25000/-. It is applying correctly for new regime but not gettin any rebate under old regime. Is this a glitch or not ? Please provide me answer.