Hello @Virendra K 

Just looking on screenshot it seems to be modal or ui page being called and showcased with some fields, Now the thing is how this field value are populated? Is it just choice list or reference field? Check how the records are filtered to showcase the choices? Also, check if any values are having blank value in record which is displayed i.e display value of record.
Start looking more in depth you will get to root cause and your issue will be resolved.

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Thanks & Regards
Viraj Hudlikar.