Step 1.
if you think arcpro, arcserver, locator have bug, maybe some one else already reported to esri,
check existing bugs here
https://support.esri.com/en-us/search?s=Newest&q=locator+will+not+search+number&product=arcgis+pro&p=4
Step 2.
every new version, they fixed a few bugs, you can check what bug they fixed on each version here
https://pro.arcgis.com/en/pro-app/latest/get-started/release-notes.htm
step 3.
click PDF file above, you will see
https://links.esri.com/arcgis-pro-issues-addressed-35x