Phase jump error in output of MultiReference InSAR operators

My workflow is using single swath

S1Tops Split with burst 1 to 3

Next

BackGeocoding > ESD> Multi-Reference InSAR

The output phase thus produced shows a clear phase discontinuity between the burst which remains even after debursting.

I followed this steps upto the unwrapped interferograms as following post steps

Multilook>Goldsteinphase Filtering>Snaphu Unwrapping > unwrapped products

Most of the output produced has the consistent same discontinuity untill the unwrapped product. I used ‘ SRTM 1Sec HGT’ both at BackGeocoding and MultiReference InSAR step

I suspect that It could be due to co registration errors but I did apply ESD to improve co-registration but still not able to solve the issue. Any help will be appreciated

The set of all generated phase diagrams