There is a gap of 28 days between my I-94 expiry and latest Extension Approval.

There is a gap of 28 days between my I-94 expiry and latest Extension Approval. I filed extension before the expiry of my Visa. Will this be considered as Illegal/out of state scenario. Do I need to correct this? Will this be a problem next time I apply for a extension. Please help me out on this.

Different people have different opinion on this type of scenarios. I would recommend speak to your attorney and proceed according to that.