Prepared Spell Count Mismatch

I am creating a new character (Druid). According to the DnDBeyond Druid Class Page, the druid should have 4 prepared spells at 1st level. However while making the character in the Character Builder when choosing spells (either in the builder view or the character page view) I can only select 3. This issue persists as I level up. Each subsequent level has less spells than the class page chart shows it should have. (Example: At level 5 the chart shows 9, but I can only prepare 7). Is this a bug, or is there something I am misunderstanding about the number of prepared spells I should have?