Very possible.
Is it a single form (only shows one record) but you can navigate to other records, or is it some other type?
Are you opening it in a Data Entry mode (can only see one new record and no prior ones)?
Does the form recordsource return more than one record (is that a query?) or did you bind it (link) to a table instead?
Might be quicker if you just copied the db, compacted then zipped it and post the copy here.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.