Offset correction to results from ADC conversion properly not happening

As per the below screenshot

The result of regular channel data is to be subtracted with an offset value. But this works only when the regular conversion sequence starts with an odd channel number and offset correction is not happening when the regular conversion sequence starts with an even channel number. Below is one of the examples below

I believe it is a mistake in the ADC? This is a weird problem and has never been seen ever before.

Did anyone face a similar problem?

I have used the DMA channel 1 interface to collect the data in dual mode(regular simultaneous and injected simultaneous mode)