BootstrapVue table pagination not rendering results properly - vue.js

Question

I'm using bootstrap-vue with version 2.9.0. When navigating to another page, the result does not display unless I click on to another page then the previous page will show up then immediately show the current page, which I find it really weird.
Here's a snippet:
<b-table
:items="dataTable.customerList"
:fields="dataTable.fields"
:per-page="dataTable.perPage"
:current-page="dataTable.currentPage"
:sort-by.sync="dataTable.sortBy"
:sort-desc.sync="dataTable.sortDesc"
:no-local-sorting="true"
#sort-changed="sortingChanged"
responsive
striped
hover
show-empty
empty-text="Loading..."
id="tbl-customer-list"
busy.sync="true"
>
</b-table>
<b-pagination
v-model="dataTable.currentPage"
:total-rows="dataTable.totalRows"
:per-page="dataTable.perPage"
#input="getCustomers(dataTable.currentPage)"></b-pagination>
And the JS:
export default {
page: {
title: 'Customers',
meta: [{ name: 'description', content: appConfig.description }],
},
components: {
Layout,
PageHeader,
},
methods: {
getCustomers(currentPage) {
this.busy = true;
customerList({page: currentPage}).then((response) => {
this.dataTable.customerList = response.data;
this.dataTable.totalRows = response.total;
this.dataTable.currentPage = response.current_page;
this.dataTable.perPage = response.per_page;
this.dataTable.lastPage = response.last_page;
this.busy = false;
})
},
sortingChanged(ctx) {
console.log(ctx);
this.$root.$emit('bv::table::refresh', 'tbl-customer-list')
},
},
mounted() {
this.getCustomers();
},
data() {
return {
title: 'Customers',
busy: false,
dataTable: {
customerList: [],
fields: [
{ key: 'customer_name', label: 'Full Name', sortable: true },
{ key: 'actions', sortable: false },
],
totalRows: 0,
currentPage: 1,
perPage: 0,
lastPage: 1,
sortBy: 'first_name',
sortDesc: false,
filter: null,
filterOn: [],
},
}
},
}
When I remove :current-page="dataTable.currentPage" on the b-table, it works fine but I when clicking on the row headers will always display the current page as 1. (See sortingChanged)