Powerapps Office365Users.SearchUserV2 not showing full list of Office365Users in the active directory

On a powerapps form, I have a dropdown searching the users. I am using the following in the "Items" of the DataCardValue10

Filter(
    Office365Users.SearchUserV2(
        {SearchTerm:Trim(Self.SearchText),isSearchTermRequired:false}
        ).value,
         AccountEnabled = true, !IsBlank(JobTitle))

this shows only the users up to names beginning "I" like Ian, and I also cant search anyone after this.

Has anyone else encountered this issue and found a solution?

I have tried the following but got the exact same results

Filter(
    Office365Users.SearchUserV2(
        {SearchTerm:Trim(Self.SearchText),isSearchTermRequired:false,top:99999}
        ).value,
         AccountEnabled = true, !IsBlank(JobTitle))

1. search user connection is not designed to show you all the users in your organization.
2. in order to properly search the users, you need to correctly setup fields property of your legacy combobox control in the properties window.