Database will not search by single character

In my search form I have two fields. Some of the entries are single digit characters. On one field it will find by searching only a single character while on the other it requires a minimum of two characters to find results. Both fields are short text and have the same settings so I don't understand why one will show search results when it's only a single character but the other will not show results and requires a minimum of two characters to show results. I have attached an image that will hopefully clarify the issue. Here is a link to test the issue yourself![](upload://hk0qoHJbYwk7k3O282G6g13FoQS.png)